Minor refactors associated with another branch

* https://github.com/railsbridge/bridge_troll/pull/152
Clean up bloated request spec
Update README.markdown

* Document the style guide
Merge branch 'cleanup-spec' of https://github.com/fionatay/bridge_troll into fionatay-cleanup-spec
Merge branch 'update_readme' of https://github.com/fionatay/bridge_troll into fionatay-update_readme