Create CONTRIBUTING.md

CONTRIBUTING.md

@@ -0,0 +1,23 @@
+## Contribution
+Great to see you here. Thank you for considering contribution to pyCeterisParibus. Let's make it better together!
+
+### Reporting bugs
+Have you found a bug? 
+* Make sure you have the **latest version** of the package.
+* **Check whether it is not already in** [Issues](https://github.com/ModelOriented/pyCeterisParibus/issues).
+* Add an issue following **Bug report template**.
+
+### Fixing bugs
+Do you know how to fix the bug? You are more than welcome to do this!
+* Clone this repo.
+* Fix the bug.
+* Make sure all the **tests** passed.
+* Open the pull request, attach the issue number in description if possible.
+
+### Suggest a new feature
+* Use **Feature request template**.
+
+### Launching tests
+Tests are launched automatically using travis.
+
+You can also run them with ```python -m pytest --cov=./```