REPO: Linux compatibility with .py files (line endings/autoCRLF)

[Danweel]

Windows causes a problem due to expecting Carriage Return+Line Feed at the end of lines (CRLF):

Git can take care of this by adding a note to .gitattributes :

*.py text eol=lf

which instructs it to automatically use Git's core.autocrlf
which does this when checking out of Windows:

git config --global core.autocrlf input

and this when checkign out of Linux/Mac:

git config --global core.autocrlf true

1. Run dos2unix TheViolenceLayerManager.py once on your Linux machine to fix the current ^M errors.
2. Add the .gitattributes file to the repo.
3. Commit.
4. Windows users will get the file with correct line endings automatically. They won't see any difference in functionality.

Not urgent because there is no included py files yet.