Add [UIAlertView rac_willDismissSignal]. This is required when events are required if the alert is dismissed programatically. rac_buttonClickedSignal does not fire an event in that situation.
Formatting.
Add test case for -[UIAlertView rac_willDismissSignal].
Merge pull request #1461 from talko/alert

Add [UIAlertView rac_willDismissSignal].