Bringing back missing files, adding comments for chapter 9.
First part of chapter 9 tests passing, comments and policy added.
Rubocop errors corrected
Added omniauth for Twitter. Almost there, test not passing.
Still working to fix omniauth. Having a 401 error message.
Due to error in Gitbook, had issues with tests. Finally passing, chapter 9
complete.
Merge pull request #12 from petemmitchell/chapter9

Chapter9