Create CONTRIBUTING.md

CONTRIBUTING.md

@@ -0,0 +1,33 @@
+# Contributing
+
+## Report a bug
+
+Just use a 'bug report' template when creating a new issue.
+
+## Submit a PR
+
+The process of submitting a pull request depends on what kind of changes you have in it:
+
+#### Fix typo/documentation clarification
+
+You can open your PR directly against a `master` branch.
+
+#### Fix a minor bug
+
+Open your PR against the `dev` branch of the repository with a meaningful message in the description.
+
+#### Fix a bug in the library core/implement a new feature
+
+First, open an issue from 'feature request' template or describe in the existing issue what idea you are trying to implement
+– probably it needs some tuning to be more aligned with the whole library design and vision.
+After a design discussion, you can open a PR against the `dev` branch.
+
+## Propose/implement a new serialization format
+
+If you have created a new serialization format, you can keep it
+in your repository to be able to perform proper maintenance and to have a separate release cycle. 
+You can submit a PR to the [list of community-supported formats](formats/README.md#other-community-supported-formats) with a description of your library.
+
+## Building this library
+
+You can find all the instructions [here](docs/building.md)