Bug: addButtonWithTitle fails when 0 buttons passed in initWithTitle

[simonholroyd]

If you use addButtonWithTitle to add additional buttons rather than pass them all through initWithTitle:message:delegate:cancelButtonTitle:otherButtonTitles then the indexing of the buttons is incorrect. Maybe addButtonWithTitle wasn't designed to be a public method used this way, but I've found it's helpful sometimes to iteratively add buttons.

eg.

TTAlertView *alert = [[TTAlertView alloc] initWithTitle:@"test" message:@"testing alert" delegate:nil cancelButtonTitle:@"cancel" otherButtonTitles:nil];

...

[alert addButtonWithTitle:@"button that should show"];
[alert show];