ParsePlatform/ParseUI-iOS — pull request #17 by nlutsenko-fb (2014-12-09 00:13:09+00:00)
Title: Fix warnings in console when SignUpViewController or LogInViewController are cancelled.

2 things here:
- Wrong delegate method name (and it's optonal anyway)
- Unnecessary `dismissViewControllerAnimated:completion`, as the logic for handling the dismiss on cancellation is handled inside the view controllers.

This fixes warnings in console in Demo app that are surfaced whenever a view controller is dismissed by canceling it.