Enable line ending normalization for text files

[ohumbel]

For multi platform projects, line endings in text files (CR vs. CRLF) are always an issue.
A .gitattributes file helps handling these line endings on a per repository basis.

I want to create a minimal .gitattributes file, if so specified in config.ini.

Further reading:
https://help.github.com/articles/dealing-with-line-endings/
http://stackoverflow.com/questions/170961/whats-the-best-crlf-carriage-return-line-feed-handling-strategy-with-git

[WtfJoke]

Makes sense^^ Since we rum into similar issues with even this small repository 😄