Add support for stories and an example of use. Fix bug preventing use when installed.

Fix various style issues to comply with PEP 8
Merge pull request #4 from colatkinson/master

Add support for stories
Add user-agent header. Fixes #5
Use pip-compile to compile requirements
Add tests for login and logout
Add notes about contributing
Update pycrypto and requests
Correct markdown syntax
Merge branch 'master' of github.com:martinp/pysnap