message: update the contribution txt per Kent's request
diff: +
  +## Contribution License Agreement
  +1. The code I am contributing is mine, and I have the right to license it.
  +
  +2. By submitting a pull request for this project I am granting you a license to distribute said code under the MIT License for the project.
  +
  ## How to contribute
  Our code contriubtion guidelines closely follows the model of [GitHub pull-requests](https://help.github.com/articles/using-pull-requests/). This repository follows the [git flow](http://nvie.com/posts/a-successful-git-branching-model/) workflow, which dictates a /master branch where releases are cut, and a /develop branch which serves as an integration branch for new code.
  