xcode stuff
4S implementation
Implemented login, foursquare searching, preview
updates on searching, images
minor updates
updated login & register screens
Minor updates on the register screen.
Updated global navigation with Tab Bar
Improved feedback screen according to the new design
Added the functionality to take photo or choose from library
Removed the alert asking to take survey
partial server implementation
Login/Register flow + internal architecture
fixed a few issues
Implemented paralax for the login/register flow
Implemented a lot of services and objects
user profile service comsumption
Implemented full registration
implemented invitation
added new service for merchants
added search by name
updated profile, services for photo upload and feedback and friends