ActionSheetPicker needs cancel block to handle hiding

[ghost]

If a user taps outside the picker, they are still cancelling it. The ability for cancel blocks to run when the picker is hidden without using the cancel button is needed.

[ghost]

This is actually critical, I'd consider it a bug.

[skywinder]

Hi. Did you look at #34?
@ynop gently implement this feature for you!
You can use
pod 'ActionSheetPicker-3.0' , :branch => 'master'
To use latest changes. I will add this to the 1.1.11 soon.

[skywinder]

duplicate of #37