create basic app skeleton, set linker flags, add FacebookSDK, gitignore and gitattributes files
add model
add MapView and change the titles of both detail and master view controllers
set Facebook App ID
add LogInViewController
Add the login workflow
add logout button
add the logout workflow
set request for app's permissions
delete comments
fetch friends
refactor of fetching friends in MasterViewController
fetch locations and show annotations on the map
convert to Xcode 4.5 project
show sorted list of friends (alphabetically)
rename MaterViewController to FriendsTableViewController
rename DetailViewController to MapViewController
show friends sorted in sections
add thread-safe code
add annotations to the map in a batch