README updates

Author: ritch

README.md

@@ -2,8 +2,16 @@
 
 ## Documentation
 
-[See the full documentation](http://docs.strongloop.com/loopback)
+[See the full documentation](http://docs.strongloop.com/loopback).
 
 ## Issues
 
-File any issues [here on GitHub](https://github.com/strongloop/loopback/issues)
+File any issues [here on GitHub](https://github.com/strongloop/loopback/issues).
+
+## Features
+
+Read about the [features of LoopBack](https://github.com/strongloop/loopback/wiki/Features).
+
+## Contributing
+
+A brief guide for [contributing to LoopBack projects](https://github.com/strongloop/loopback/wiki/How-To-Contribute).