more pep8 stuff, missed some whitespace
more pep8 stuff, missed some whitespace

This is why I should clone repos even for minor changes like this... Why can't the test run something like `autopep8 --in-place --aggressive --aggressive` before commiting? (just dreaming) but that would fix problems from minor changes like this automatically and should leave the rest of the code in-tact... in theory.
jleclanche/dj-stripe,jleclanche/dj-stripe,tkwon/dj-stripe,dj-stripe/dj-stripe,kavdev/dj-stripe,pydanny/dj-stripe,dj-stripe/dj-stripe,jameshiew/dj-stripe,kavdev/dj-stripe,tkwon/dj-stripe,jameshiew/dj-stripe,pydanny/dj-stripe