Center sponsor logos to make them look less awkward

Because we don't have consistent sizing for the sponsor logos, the
spacing can look a bit awkward. Grouped the logos and centered them to
address this.

Author: mxie

app/assets/stylesheets/modules/_sponsors.scss

@@ -5,6 +5,10 @@
     padding: 20px;
   }
 
+  .logos div {
+    text-align: center;
+  }
+
   .huge-logos img {
     height: 140px;
   }

app/views/static_pages/sponsors.html.haml

@@ -8,75 +8,81 @@
   %h2 Program Sponsors
   %hr/
   %p Our program sponsors allow us to expand geographically and support organizers to create events in advance of local sponsor commitments.  With their encouragement and support, there have been workshops in 42 different cities around the world.
-  = link_to image_tag("sponsor-logos/heroku.png", class: 'img-responsive'), "https://www.heroku.com/"
-  = link_to image_tag("sponsor-logos/google.png", class: 'img-responsive'), "http://www.google.com/"
+  %div
+    = link_to image_tag("sponsor-logos/heroku.png", class: 'img-responsive'), "https://www.heroku.com/"
+    = link_to image_tag("sponsor-logos/google.png", class: 'img-responsive'), "http://www.google.com/"
 
 .logos.big-logos
   %h2 Ongoing Workshop Sponsors
   %hr/
   %p These companies provide ongoing support by sponsoring workshops on a regular basis.
-  = link_to image_tag("sponsor-logos/pivotal.jpg"), "http://pivotallabs.com/"
-  = link_to image_tag("sponsor-logos/thoughtbot.png"), "https://thoughtbot.com/"
-  %br
-  = link_to image_tag("sponsor-logos/carbonfive.png"), "http://carbonfive.com/"
-  = link_to image_tag("sponsor-logos/engineyard.png"), "https://www.engineyard.com/"
-  = link_to image_tag("sponsor-logos/autodesk.png"), "https://www.autodesk.com/"
+  %div
+    = link_to image_tag("sponsor-logos/pivotal.jpg"), "http://pivotallabs.com/"
+    = link_to image_tag("sponsor-logos/thoughtbot.png"), "https://thoughtbot.com/"
+    %br
+    = link_to image_tag("sponsor-logos/carbonfive.png"), "http://carbonfive.com/"
+    = link_to image_tag("sponsor-logos/engineyard.png"), "https://www.engineyard.com/"
+    = link_to image_tag("sponsor-logos/autodesk.png"), "https://www.autodesk.com/"
 .logos.medium-logos
   %h2 Partner Organizations
   %hr/
-  = link_to image_tag("partner-org-logos/devchix.jpeg"), "http://www.devchix.com/"
-  = link_to image_tag("partner-org-logos/latino-startup-alliance.png"), "http://latinostartupalliance.org/"
-  = link_to image_tag("partner-org-logos/blackfounders.png"), "http://www.blackfounders.com/"
-  = link_to image_tag("partner-org-logos/women2.jpeg"), "http://www.women2.com/"
+  %div
+    = link_to image_tag("partner-org-logos/blackfounders.png"), "http://www.blackfounders.com/"
+    %br
+    = link_to image_tag("partner-org-logos/devchix.jpeg"), "http://www.devchix.com/"
+    = link_to image_tag("partner-org-logos/latino-startup-alliance.png"), "http://latinostartupalliance.org/"
+    = link_to image_tag("partner-org-logos/women2.jpeg"), "http://www.women2.com/"
 
 .logos.medium-logos
   %h2 Supporting Conferences
   %hr/
-  = link_to image_tag("conference-logos/ruby-on-ales.jpg"), "http://ruby.onales.com"
-  = link_to image_tag("conference-logos/rubyfuza.png"), "http://rubyfuza.org"
-  = link_to image_tag("conference-logos/madison-ruby.jpg"), "http://madisonruby.org"
-  = link_to image_tag("conference-logos/rocky-mountain-ruby.png"), "http://rockymtnruby.com"
-  = link_to image_tag("conference-logos/la-ruby.jpg"), "http://www.larubyconf.com"
-  = link_to image_tag("conference-logos/code4lib.png"), "http://code4lib.org/conference"
-  = link_to image_tag("conference-logos/aloha.jpg"), "http://www.alohaonrails.com"
+  %div
+    = link_to image_tag("conference-logos/ruby-on-ales.jpg"), "http://ruby.onales.com"
+    = link_to image_tag("conference-logos/rubyfuza.png"), "http://rubyfuza.org"
+    = link_to image_tag("conference-logos/madison-ruby.jpg"), "http://madisonruby.org"
+    = link_to image_tag("conference-logos/rocky-mountain-ruby.png"), "http://rockymtnruby.com"
+    = link_to image_tag("conference-logos/la-ruby.jpg"), "http://www.larubyconf.com"
+    = link_to image_tag("conference-logos/code4lib.png"), "http://code4lib.org/conference"
+    = link_to image_tag("conference-logos/aloha.jpg"), "http://www.alohaonrails.com"
 
 .logos.smaller-logos
   %h2 Workshop Sponsors
   %hr/
-  = link_to image_tag("workshop-sponsor-logos/thoughtworks.jpg"), "http://www.thoughtworks.com/"
-  = link_to image_tag("workshop-sponsor-logos/github.png"), "https://github.com/"
-  = link_to image_tag("workshop-sponsor-logos/incomm.png"), "http://www.incomm.com/"
-  = link_to image_tag("workshop-sponsor-logos/modcloth.jpeg"), "http://www.modcloth.com/"
-  = link_to image_tag("workshop-sponsor-logos/tapjoy.jpeg"), "https://www.tapjoy.com/"
-  = link_to image_tag("workshop-sponsor-logos/airbnb.png"), "https://www.airbnb.com/"
-  = link_to image_tag("workshop-sponsor-logos/bing.png"), "http://www.bing.com/"
-  = link_to image_tag("workshop-sponsor-logos/nexTag.jpg"), "http://www.nextag.com/"
-  = link_to image_tag("workshop-sponsor-logos/orange-labs.jpg"), "http://www.primezone.orange-labs.com/information.html?hl=en&info=orangelabs"
-  = link_to image_tag("workshop-sponsor-logos/outright.jpeg"), "http://outright.com/"
-  = link_to image_tag("workshop-sponsor-logos/quickleft.jpg"), "http://quickleft.com/"
-  = link_to image_tag("workshop-sponsor-logos/rackspace.jpeg"), "http://www.rackspace.com/"
-  = link_to image_tag("workshop-sponsor-logos/CfA.png"), "http://codeforamerica.org/"
-  = link_to image_tag("workshop-sponsor-logos/coderow.jpg"), "http://www.coderow.com/"
-  = link_to image_tag("workshop-sponsor-logos/galvanize.jpg"), "http://galvanize.it/"
-  = link_to image_tag("workshop-sponsor-logos/gnip.jpeg"), "http://gnip.com/"
-  = link_to image_tag("workshop-sponsor-logos/envylabs.jpeg"), "http://envylabs.com/"
-  = link_to image_tag("workshop-sponsor-logos/google-ventures.png"), "http://www.googleventures.com/"
-  = link_to image_tag("workshop-sponsor-logos/groupon.jpeg"), "http://www.groupon.com/"
-  = link_to image_tag("workshop-sponsor-logos/harvest.png"), "http://www.getharvest.com/"
-  = link_to image_tag("workshop-sponsor-logos/ign-entertainment.png"), "http://corp.ign.com/"
-  = link_to image_tag("workshop-sponsor-logos/hashrocket.jpg"), "http://hashrocket.com/"
-  = link_to image_tag("workshop-sponsor-logos/kaporfoundation.jpg"), "http://www.kaporcenter.org/"
-  = link_to image_tag("workshop-sponsor-logos/mediacore.jpg"), "http://mediacore.com/"
-  = link_to image_tag("workshop-sponsor-logos/microsoft.jpg"), "http://www.microsoft.com/"
-  = link_to image_tag("workshop-sponsor-logos/verticalresponse.jpeg"), "http://www.verticalresponse.com/"
-  = link_to image_tag("workshop-sponsor-logos/scribd.jpeg"), "http://www.scribd.com/"
-  = link_to image_tag("workshop-sponsor-logos/neo.png"), "https://www.linkedin.com/company/neo-innovation-inc-"
-  = link_to image_tag("workshop-sponsor-logos/square.jpg"), "https://squareup.com/"
-  = link_to image_tag("workshop-sponsor-logos/twilio.png"), "http://www.twilio.com/"
-  = link_to image_tag("workshop-sponsor-logos/twitter.png"), "https://twitter.com/"
-  = link_to image_tag("workshop-sponsor-logos/braintree.png"), "https://www.getbraintree.com/"
-  = link_to image_tag("workshop-sponsor-logos/wested.jpg"), "http://www.wested.org/"
-  = image_tag("workshop-sponsor-logos/workhappy.png")
-  = link_to image_tag("workshop-sponsor-logos/awesomeinc.jpeg"), "http://awesomeinc.org/"
-  = link_to image_tag("workshop-sponsor-logos/stride.png"), "http://www.stridenyc.com/"
-  = link_to image_tag("workshop-sponsor-logos/etsy.png"), "https://www.etsy.com/"
+  %div
+    = link_to image_tag("workshop-sponsor-logos/thoughtworks.jpg"), "http://www.thoughtworks.com/"
+    = link_to image_tag("workshop-sponsor-logos/github.png"), "https://github.com/"
+    = link_to image_tag("workshop-sponsor-logos/incomm.png"), "http://www.incomm.com/"
+    = link_to image_tag("workshop-sponsor-logos/modcloth.jpeg"), "http://www.modcloth.com/"
+    = link_to image_tag("workshop-sponsor-logos/tapjoy.jpeg"), "https://www.tapjoy.com/"
+    = link_to image_tag("workshop-sponsor-logos/airbnb.png"), "https://www.airbnb.com/"
+    = link_to image_tag("workshop-sponsor-logos/bing.png"), "http://www.bing.com/"
+    = link_to image_tag("workshop-sponsor-logos/nexTag.jpg"), "http://www.nextag.com/"
+    = link_to image_tag("workshop-sponsor-logos/orange-labs.jpg"), "http://www.primezone.orange-labs.com/information.html?hl=en&info=orangelabs"
+    = link_to image_tag("workshop-sponsor-logos/outright.jpeg"), "http://outright.com/"
+    = link_to image_tag("workshop-sponsor-logos/quickleft.jpg"), "http://quickleft.com/"
+    = link_to image_tag("workshop-sponsor-logos/rackspace.jpeg"), "http://www.rackspace.com/"
+    = link_to image_tag("workshop-sponsor-logos/CfA.png"), "http://codeforamerica.org/"
+    = link_to image_tag("workshop-sponsor-logos/coderow.jpg"), "http://www.coderow.com/"
+    = link_to image_tag("workshop-sponsor-logos/galvanize.jpg"), "http://galvanize.it/"
+    = link_to image_tag("workshop-sponsor-logos/gnip.jpeg"), "http://gnip.com/"
+    = link_to image_tag("workshop-sponsor-logos/envylabs.jpeg"), "http://envylabs.com/"
+    = link_to image_tag("workshop-sponsor-logos/google-ventures.png"), "http://www.googleventures.com/"
+    = link_to image_tag("workshop-sponsor-logos/groupon.jpeg"), "http://www.groupon.com/"
+    = link_to image_tag("workshop-sponsor-logos/harvest.png"), "http://www.getharvest.com/"
+    = link_to image_tag("workshop-sponsor-logos/ign-entertainment.png"), "http://corp.ign.com/"
+    = link_to image_tag("workshop-sponsor-logos/hashrocket.jpg"), "http://hashrocket.com/"
+    = link_to image_tag("workshop-sponsor-logos/kaporfoundation.jpg"), "http://www.kaporcenter.org/"
+    = link_to image_tag("workshop-sponsor-logos/mediacore.jpg"), "http://mediacore.com/"
+    = link_to image_tag("workshop-sponsor-logos/microsoft.jpg"), "http://www.microsoft.com/"
+    = link_to image_tag("workshop-sponsor-logos/verticalresponse.jpeg"), "http://www.verticalresponse.com/"
+    = link_to image_tag("workshop-sponsor-logos/scribd.jpeg"), "http://www.scribd.com/"
+    = link_to image_tag("workshop-sponsor-logos/neo.png"), "https://www.linkedin.com/company/neo-innovation-inc-"
+    = link_to image_tag("workshop-sponsor-logos/square.jpg"), "https://squareup.com/"
+    = link_to image_tag("workshop-sponsor-logos/twilio.png"), "http://www.twilio.com/"
+    = link_to image_tag("workshop-sponsor-logos/twitter.png"), "https://twitter.com/"
+    = link_to image_tag("workshop-sponsor-logos/braintree.png"), "https://www.getbraintree.com/"
+    = link_to image_tag("workshop-sponsor-logos/wested.jpg"), "http://www.wested.org/"
+    = image_tag("workshop-sponsor-logos/workhappy.png")
+    = link_to image_tag("workshop-sponsor-logos/awesomeinc.jpeg"), "http://awesomeinc.org/"
+    = link_to image_tag("workshop-sponsor-logos/stride.png"), "http://www.stridenyc.com/"
+    = link_to image_tag("workshop-sponsor-logos/etsy.png"), "https://www.etsy.com/"