Merge pull request #64 from zalando/LappleApple-patch-2

Create CONTRIBUTING.rst

CONTRIBUTING.rst

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+Contributing to pg_view
+============================
+
+1. To get started quickly, visit our `issues tracker`_ and look for the "Help Wanted" tag. Pick the issue(s) that you want to take over, and leave a comment saying that you will start working on implementing/fixing.  
+
+2. Fork the repository.
+
+3. Please write tests for the changes you make.
+
+4. Make a pull request to the repo.  
+
+5. The maintainers will review your changes and either reach out with new information or merge.
+
+.. _issues tracker: https://github.com/zalando/pg_view/issues