Updated README.md & added new CONTRIBUTING.md document.

Author: morgant

CONTRIBUTING.md

@@ -0,0 +1,40 @@
+CONTRIBUTING TO NewtonScript.org
+================================
+
+We welcome feedback, bug fixes, content & display improvements, and 
+translations. Ultimately, what gets accepted and merged into the project is up 
+to NewtonScript.org staff (specifically, Morgan Aldridge, the current project 
+maintainer), but you are encouraged to submit your improvements.
+
+WHAT YOU NEED
+-------------
+
+You will need the following to contribute:
+
+* A [GithHub](http://github.com) account for submitting pull requests
+* A familiarity with HTML5
+
+MAKING CHANGES
+--------------
+
+You will need to do the following to make changes that are most likely to be
+accepted with little headache and back & forth:
+
+1. Fork the [newtonscript.github.com](https://github.com/NewtonScript/newtonscript.github.com) project on GitHub
+2. Create a topic branch from the `master` branch
+3. Make commits in logical units and with properly explanatory commit messages
+4. Preview your changes in an HTML5-capable web browser to ensure nothing broke and everything is rendering appropriately.
+
+SUBMITTING CHANGES
+------------------
+
+When you've completed your changes and are ready for them to be merged into the
+main project, you can do the following to submit them for review and likely
+inclusion in NewtonScript.org:
+
+1. Push your changes to your fork of the newtonscript.github.com project on GitHub
+2. Submit a pull request to the [newtonscript.github.com](https://github.com/NewtonScript/newtonscript.github.com) project
+
+That's all there is to it. If you followed the "Making Changes" guidelines and 
+the changes are aligned with the vision of the project, it should be a pretty 
+smooth process to get them merged in.