Adding sleep timer to Timber music player

Components

Timber music player is a music player application on android that has the look of a design material that is very beautiful and amazing with a variety of features. Unfortunately I did not find the sleep timer feature.

Proposal

I am proposing that a sleep button should be introduced in the timber music player.

Mockups / Examples

Benefits

Sleeping timer as the featuring function for the music player that allow the user fall asleep to their favorite song . User simply start the songs and .... sleep timer button that allow user to set a countdown timer for this music player application.