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+Contributing
+============
+
+Thank you for contributing to this project!
+
+Bug reports
+-----------
+
+If you find a bug, please submit an issue. Try to be as detailed as possible
+in your problem description to help us fix the bug.
+
+Feature requests
+----------------
+
+If you wish to propose a feature, please submit an issue. Try to explain your
+use case as fully as possible to help us understand why you think the feature
+should be added.
+
+License
+-------
+
+By contributing your code, you agree to license your contribution under the terms of the APLv2: 
+https://github.com/opentracing/opentracing-php/blob/master/LICENSE
+
+All files are released with the Apache 2.0 license.
+
+Creating a pull request (PR)
+----------------------------
+
+First [fork the repository](https://help.github.com/articles/fork-a-repo/) on
+GitHub.
+
+Then clone your fork:
+
+```bash
+$ git clone https://github.com/your-name/opentracing-php.git
+$ git checkout -b bug-or-feature-description
+```
+
+And install the dependencies:
+
+```bash
+$ composer install
+```
+
+Write your code and add tests. Then run the static check and the tests:
+
+```bash
+$ composer run static-check
+$ composer run test
+```
+
+Commit your changes and push them to GitHub:
+
+```bash
+$ git commit -m "Fix nasty bug"
+$ git push -u origin bug-or-feature-description
+```
+
+Then [create a pull request](https://help.github.com/articles/creating-a-pull-request/)
+on GitHub.
+
+If you need to make some changes, commit and push them as you like. When asked
+to squash your commits, do so as follows:
+
+```bash
+git rebase -i
+git push origin bug-or-feature-description -f
+```
+
+Coding standard
+---------------
+
+This project follows the [PSR-2](http://www.php-fig.org/psr/psr-2/) coding style.
+Please make sure your pull requests adhere to this standard.