Battery optimizer and Widget

Jan 21, 2016

v2.3
1) Add trickle charge notification switch in setting -> notification
2) Modify the problem which auto start switch will change the notification

v2.2
1) Auto start app when connect to power supply, and the switch for this function
2) The notifications for full charge and trickle charge
3) Support trickle charge after exit app

v2.1
1) Fix memory info in some cases can't display correctly problem
2) Add fast charge mode support for some smart phones

v2.0
Fix minor bugs.