Merge pull request #29 from angelovdeodd/unstable

Changed module name "self" to "currentUser" PJZL/firesquare#29
Fixed issue, when user has no recent checkins error occured.
Fix to fix. Now checking count param.
Changes after code review.
Merge pull request #30 from precz/unstable

Fixed issue, when user has no recent checkins error occured.
User can now add shout and share checkin to Twitter and FB.