Implements generators to pass all tests
Merge branch 'master' of https://github.com/codefellows/sea-f2-python-sept14 into generator-tasks
Merge branch 'generator-tasks' of https://github.com/jbbrokaw/sea-f2-python-sept14 into jbbrokaw-generator-tasks
Merge branch 'jbbrokt push origin masteraw-generator-tasks'