Update README.md

Moves contributing and licence to dedicated community recognised files.

Author: rikkipitt

README.md

@@ -57,42 +57,3 @@ end
 ![History view](https://github.com/rikkipitt/rails_admin_history_rollback/raw/master/screenshots/history.png "history view")
 
 ![Modal view](https://github.com/rikkipitt/rails_admin_history_rollback/raw/master/screenshots/modal.png "modal view")
-
-
-## Contributing
-Submitting a Pull Request:
-
-1. [Fork the repository.][fork]
-2. [Create a topic branch.][branch]
-3. Implement your feature or bug fix.
-4. Add, commit, and push your changes.
-5. [Submit a pull request.][pr]
-
-[fork]: http://help.github.com/fork-a-repo/
-[branch]: http://learn.github.com/p/branching.html
-[pr]: http://help.github.com/send-pull-requests/
-
-
-## License
-**This project rocks and uses MIT-LICENSE.**
-
-Copyright 2015 Rikki Pitt
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.