How to block Facebook Application Requests(Ex:Candycrush,.........)

Now a days you can see lot of notifications on your facebook page with "xxxxx invited you to play candy crush or any other application" and most of the people formally reject it and request his/her friends to stop sending those kind of requests.In some cases people also post on their wall to stop sending those kind of requests.Well this post drives u how to block/unblock those kind of request for that you just need to follow the below steps.
                               
  
Go to Setting's.

Click on Blocking,at the bottom of it u will find "Block Apps".

Type the name of the App which u want to block and that's it u r done.

In case if you want to unblock the app click on "Unblock".