Start the predefined nap from Android Wear

From Oasis Feng on 2016/01/22 07:26:34 +0000

At present, I could only start the normal sleep from Android Wear, but not the “nap”. It would be very convenient for the nap to be started from the watch too.

Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/11542107-start-the-predefined-nap-from-android-wear