Begins setting up findTweetsContainingUserId tests
Adds TrackSchema and Tracks model
Merge branch 'dbUpdates' into dbUpdate
Sets up a Twit stream to track new users by twitter handle and updates twitter handle track/stream for existing users upon login
Fixes a minor syntax error
Refactors twitter stream helper methods and callback function for passport auth
Updates track schema
Includes followers as user subdocuments in the track schema.
Includes new database methods and specs for track model and updates track and user schema
Updates db specs and helper methods for deleteTweet and findTweetsContainingUserId
Adds routes for users and tracks
Merge branch 'dbUpdate' of https://github.com/Panoptico/NetSense into dbUpdate

Conflicts:
	db/track.js
	specs/databaseSpec.js
Merge branch 'twitterTrack' into dbUpdate
Adds tests for the user and track routes
Merge branch 'dbUpdate' of https://github.com/Panoptico/NetSense into dbUpdate
Adds helper methods for tweeting and retweeting on behalf of an user
Adds a post request handler to the track/:trackName route and includes related server specs related
Merge branch 'dbUpdate' of https://github.com/Panoptico/NetSense into dbUpdate
Merge branch 'dbUpdate' into dev