Merge pull request #16 from hqmq/contributing

Update instructions for newbies like me to contribute.

CONTRIBUTING.md

@@ -21,22 +21,33 @@ Other projects require a similar agreement: jQuery, Firefox, Apache, Node, and m
 
 Here's an easy guide that should get you up and running:
 
-1. Fork the project on github and pull down your copy.
-   > replace the {{ username }} with your username and {{ repository }} with the repository name
+1. Fork the project on github
+2. Pull down the polymer-all project.
 
-        git clone [email protected]:{{ username }}/{{ repository }}.git --recursive
+        git clone [email protected]:Polymer/polymer-all --recursive
 
-    Note the `--recursive`. This is necessary for submodules to initialize properly. If you don't do a recursive clone, you'll have to init them manually:
-
-        git submodule init
-        git submodule update
-
-2. Development happens on the `master` branch. Get yourself on it!
+3. Go to the polymer-elements directory and switch it to point to your origin.
 
+        git remote remove origin
+        git remote add origin [email protected]:{{ username }}/{{ repository }}
+        git fetch origin
         git checkout master
 
+4. Pull down node dependencies. In your polymer-elements directory run 'npm install' this will pull down the tools used for executing the test. 
+
 That's it for the one time setup. Now you're ready to make a change.
 
+## Running the tests
+
+To run the tests make sure you have a webserver running with its docroot pointing to the polymer-all directory.  Then navigate to /polymer-elements/test/runner.html
+
+For Example:
+
+      cd polymer-all
+      ruby -rwebrick -e'WEBrick::HTTPServer.new(:Port => 4000, :DocumentRoot => Dir.pwd).start'
+
+Then in your browser open: http://localhost:4000/polymer-elements/test/runner.html
+
 ## Submitting a pull request
 
 We iterate fast! To avoid potential merge conflicts, it's a good idea to pull from the main project before making a change and submitting a pull request. The easiest way to do this is setup a remote called `upstream` and do a pull before working on a change: