Add `.gitattributes` file
Add `.gitattributes` file

The addition of the `.gitattributes` file is made in order to make
Git automatically normalize line endings for all text-based files.

Ref: https://www.kernel.org/pub/software/scm/git/docs/gitattributes.html
     http://git-scm.com/docs/gitattributes#_end_of_line_conversion

modulexcite/travis-scripts,alrra/travis-scripts,alrra/travis-scripts,paulirish/travis-scripts