reference CONTRIBUTING.md

Author: ysksn

README.md

@@ -133,13 +133,7 @@ you may have luck with another of the runtimes supported by
 
 # Contribution
 
-1. Fork it
-1. Create your feature branch (`git checkout -b your-branch`)
-1. Commit your changes (`git commit -am 'Add new feature'`)
-1. Push to the branch (`git push origin your-branch`)
-1. Create new Pull Request
-
-We favor pull request with very small, single commits with a single purpose.
+[See](https://github.com/emberjs/ember.js/blob/master/CONTRIBUTING.md)
 
 # How to Run Unit Tests