Move OCTClient+User into its own file
Move OCTClient+Organizations
Move OCTClient+Keys
Move OCTClient+Events
Move OCTClient+Notifications
Move OCTClient+Repositories
Move OCTClient+Gists
Clean up forward @class declarations
Remove unnecessary imports
Reorganize so OCTClient categories are with their models
Split git data from repository info/content
Move repository listing out of user & org categories
Merge pull request #129 from octokit/split-client-categories

Move OCTClient categories into their own files, reorganize a bit