CONTRIBUTING.md

Please fork the repository, make your changes, commit them and then create a pull request in the original repository.

Also please keep the structure:

• Put different sections into different files and \input them from the content.tex file.
• Break lines at 80 columns. Lines that should continue to the next line should be broken at 80 columns with a whitespace as final character.

Keep the general file structure outlined in README.md, this makes the material more modular and compatible.