README.md in vcloud-walker-5.0.0 vs README.md in vcloud-walker-5.1.0

@@ -84,5 +84,8 @@
     bundle exec rake
 
 There are also integration tests. These are slower and require a real environment.
 See the [vCloud Tools website](http://gds-operations.github.io/vcloud-tools/testing/) for details of how to set up and run the integration tests.
 
+## Contributing
+
+Please see [CONTRIBUTING.md](/CONTRIBUTING.md).