Adds compatibility with python library
Use kwargs for creating macaroons
Adds more documentation
Merge pull request #13 from localmed/MR-24/ruby-python-compat

Adds compatibility with python library
Merge pull request #14 from localmed/MR-8/documentation

Adds documentation and kwargs
Adds travis config
Merge branch 'MR-25/travis-coveralls' of github.com:localmed/ruby-macaroons into MR-25/travis-coveralls