Incorrect UIAlertView button when 1-cancel 1-other

[inamiy]

Relating to issue #120, cancel-button's layout gets wrong when there is only 1 other button.
For example:

// non-BlocksKit
UIAlertView* alert = [[UIAlertView alloc] initWithTitle:nil message:@"test" delegate:nil cancelButtonTitle:@"Cancel" otherButtonTitles:@"OK",nil];
[alert show];

will display 'Cancel' on the left, and 'OK' on the right by default.
Please check!