Add onTargetClick function

[NewOldMax]

Hi, thanks for you awesome library.
Some of users are confused with a case when they must tap on some button twice, first time to close circle, and second time to tap on real button.
As I saw from android sources https://github.com/KeepSafe/TapTargetView there is onTargetClick support that allow to control click behavior.
Can you add support for this function in future releases?
I believe that similar function will be presented in iOS version as well

Thank you in advance

[akhilesh-mourya]

Hey, Is there any plan to add onTargetClick function ? Its really annoying for users to again tap on same button to perform described action