Update AFSQLManager.m

Fixed issue when no error, but also not open. Completion block would never be called.
Updated block in createDatabase to just pass status and error back to completion block.
Update AFSQLManager.m

Misunderstood 'open' parameter. However, in the case of non-openImmediately requests, you still need to call that 'completion' block.
Also, fixed a typo in the method declaration... will probably need to find uses and fix them.
Fixing typos in other files
Merge pull request #1 from shortstuffsushi/patch-1

Update AFSQLManager.m