adding account preference view
Merge branch 'master' into account
fixing build warning for NSTextField max width on versions prior to 10.8
initial account integration

- added OAuth2Client
- updated acknowledgements
- added account preference
- update podfile with minimum dependencies
Merge branch 'master' into develop

Conflicts:
	Hubby/Interface/Preferences/Views/General/MRGeneralPreferencesViewController.m
obtaining clientid and secret from environment variables
removing octocat menu icon to be compliant with github usage policy
adding repository creation window and preferences for control over what happens after repository or gist creation