README: Add instructions on how to get started

README.md

@@ -1,7 +1,14 @@
 Chromium Feature Dashboard
 ==================
 
-[chromestatus.com](http://chromestatus.com)
+[chromestatus.com](http://chromestatus.com/)
+
+### How to run the local test server
+
+1. Install the [Google App Engine SDK for Python](https://developers.google.com/appengine/downloads#Google_App_Engine_SDK_for_Python).
+2. Install [Bower](http://bower.io/).
+3. From the root of the repository, run `cd static; bower install`.
+4. Start the local test server using the Google App Engine SDK for Python.
 
 ### LICENSE