Merge pull request #55 from peter279k/issue_#37

Resolves issue #37

CONTRIBUTING.md

@@ -0,0 +1,32 @@
+# Contributing
+hamcrest-php is an open source, community-driven project. If you'd like to contribute, feel free to do this, but remember to follow these few simple rules:
+
+## Asking Questions
+Feel free to ask any questions and share your experiences in the [Issue tracking system](https://github.com/hamcrest/hamcrest-php/issues/) and help to improve the documentation.
+
+## Submitting an issues
+- A reproducible example is required for every bug report, otherwise it will most probably be __closed without warning__.
+- If you are going to make a big, substantial change, let's discuss it first.
+
+## Working with Pull Requests
+1. Create your feature addition or a bug fix branch based on __`master`__ branch in your repository's fork.
+2. Make necessary changes, but __don't mix__ code reformatting with code changes on topic.
+3. Add tests for those changes (please look into `tests/` folder for some examples). This is important so we don't break it in a future version unintentionally.
+4. Check your code using "Coding Standard" (see below).
+5. Commit your code.
+6. Squash your commits by topic to preserve a clean and readable log.
+7. Create Pull Request.
+
+## Running the Tests
+
+### Installation/Configuration
+
+1. Using `git clone https://github.com/hamcrest/hamcrest-php` to clone this repository.
+2. Using the `composer update` to update the dependencies to support your development environment.
+3. Using `vendor/bin/phpunit -c tests/phpunit.xml.dist` command to do unit test works.
+
+## Contributor Code of Conduct
+
+Please note that this project is released with a [Contributor Code of
+Conduct](http://contributor-covenant.org/). By participating in this project
+you agree to abide by its terms. See [CODE_OF_CONDUCT](CODE_OF_CONDUCT.md) file.