Merge pull request Polymer#567 from lucasloisp/patch-1

Add 'flex' attribute to element in the 'layout attributes' page

Author: ebidel

docs/polymer/layout-attrs.md

@@ -95,13 +95,13 @@ For example, to make "Gamma" 2x larger than "Beta" and "Alpha" 3x larger, use `f
 
     <div horizontal layout>
       <div flex three>Alpha</div>
-      <div>Beta</div>
+      <div flex>Beta</div>
       <div flex two>Gamma</div>
     </div>
 
 <div horizontal layout class="demo">
   <div flex three>Alpha</div>
-  <div>Beta</div>
+  <div flex>Beta</div>
   <div flex two>Gamma</div>
 </div>
 
@@ -297,4 +297,4 @@ Attribute | Result
 <div class="demo">Hidden: <span hidden>Not displayed</span></div>
 <div relative style="height: 100px;" class="demo">
   <div fit style="background-color: #000;color: white">Fit</div>
-</div>
+</div>