I downloaded Gsam to monitor which apps are using my battery but when I hit the home button, there is the Gsam battery icon on the top left of the notification bar. There isn't an option in the menu to Exit out of the app nor will it close or go away when I kill it with by holding down home to bring up the recent apps list and swiping left to kill it. How do I get rid of it so that it's not running in the background and sucking up battery?