Merge pull request graze#8 from graze/contributing-patch

Add CONTRIBUTING.md

CONTRIBUTING.md

@@ -0,0 +1,43 @@
+# Contributing
+
+The following guidelines for contribution should be followed if you want to submit a pull request.
+
+1\. [Fork the repository](https://github.com/graze/hamcrest-test-listener/fork)
+
+2\. Clone your new repository:
+
+    $ git clone https://github.com/<your-github-username>/hamcrest-test-listener.git
+
+3\. Set up the development environment by installing [Docker](https://www.docker.com/toolbox)
+
+4\. Add tests for your change. Make your change. Make the tests pass:
+
+    $ make test
+
+5\. Push to your fork and [submit a pull request](https://github.com/graze/hamcrest-test-listener/compare)
+
+At this point you're waiting on us. We may suggest some changes or improvements or alternatives.
+
+### Commit Messages
+
+Please also write a [good commit message](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html):
+
+* Use the present tense ("Add feature" not "Added feature")
+* Use the imperative mood ("Move cursor to..." not "Moves cursor to...")
+* Limit the first line to 72 characters or less
+* Reference issues and pull requests liberally
+* Consider starting the commit message with an applicable emoji:
+    * :art: `:art:` when improving the format/structure of the code
+    * :racehorse: `:racehorse:` when improving performance
+    * :non-potable_water: `:non-potable_water:` when plugging memory leaks
+    * :memo: `:memo:` when writing docs
+    * :bug: `:bug:` when fixing a bug
+    * :fire: `:fire:` when removing code or files
+    * :green_heart: `:green_heart:` when fixing the CI build
+    * :white_check_mark: `:white_check_mark:` when adding tests
+    * :lock: `:lock:` when dealing with security
+    * :arrow_up: `:arrow_up:` when upgrading dependencies
+    * :arrow_down: `:arrow_down:` when downgrading dependencies
+    * :shirt: `:shirt:` when removing linter warnings
+
+Thanks to [atom/atom](https://github.com/atom/atom) for the commit message guidelines.