Init CONTRIBUTING.md

with simple title
Update CONTRIBUTING.md

add initial description
Update CONTRIBUTING.md

Add Opening issues section
Update CONTRIBUTING.md

Add Submitting Pull Requests section
Update CONTRIBUTING.md

Add Additional Resources section
Update README.md

Clean description
Update README.md

Add links to Contributing, Docs and Issues
Update README.md

Add MIT License on bottom
Init DOCUMENTATION.md

with title and description