Added a Google Analytics tracking pixel to the README files

Author: Eric Koleda

README.md

@@ -3,3 +3,5 @@
 Various sample code and projects for the Google Apps Script platform. Learn
 more at
 [https://developers.google.com/apps-script](https://developers.google.com/apps-script).
+
+![GA Tracking Pixel](http://www.google-analytics.com/__utm.gif?utmac=UA-42085206-1&utmhn=github.com&utmdt=Google%20Apps%20Script%20Samples&utmp=/google/google-apps-script-samples)

bibstro/README.markdown

@@ -1,3 +1,5 @@
+# Bibstro
+
 Bibstro is a sample bibliography app for [Google Docs][docs] built upon the
 [Google Apps Script][apps_script] platform. Bibstro shows how you can extend
 Google Docs by adding custom menus, dialogs, and sidebars. Manipulating the
@@ -17,6 +19,8 @@ see our Google I/O 2013 talk “[Extend Google Docs with Apps Script][io_video]
 You may also wish to consult our [guide to extending Docs][quickstart], as well
 as Apps Script's [API reference][api_reference].
 
+![GA Tracking Pixel](http://www.google-analytics.com/__utm.gif?utmac=UA-42085206-1&utmhn=github.com&utmdt=Bibstro&utmp=/google/google-apps-script-samples/tree/master/bibstro)
+
 [api_reference]: https://developers.google.com/apps-script/reference/document/
 [apps_script]: https://developers.google.com/apps-script/
 [docs]: https://support.google.com/drive/answer/143206?ref_topic=21008&rd=1

cursor_inspector/README.md

@@ -17,3 +17,5 @@ For your convience we have deployed the script into a Google Docs
 [document](https://docs.google.com/document/d/1v6S7IkDL_YIaVn1rBcVbqFr3rbNUX9_kLfFc00WTtx8/view)
 that you can copy and use. Follow the instructions in the document to get
 started.
+
+![GA Tracking Pixel](http://www.google-analytics.com/__utm.gif?utmac=UA-42085206-1&utmhn=github.com&utmdt=Cursor%20Inspector&utmp=/google/google-apps-script-samples/tree/master/cursor_inspector)

simple_tasks/README.md

@@ -39,3 +39,4 @@ scratch, follow the steps below.
    the **User acessing the web app**.
    ([instructions available here](https://developers.google.com/apps-script/execution_web_apps)).
 
+![GA Tracking Pixel](http://www.google-analytics.com/__utm.gif?utmac=UA-42085206-1&utmhn=github.com&utmdt=Simple%20Tasks&utmp=/google/google-apps-script-samples/tree/master/simple_tasks)