Adding separate meterpreter for Android

Here I have added a separate meterpreter for Android named as java/android instead of java/java
I have added special commands for android into the meterpreter console like:

	"dump_sms" 		=> "Get sms messages",
	"dump_contacts" 	=> "Get contacts list",
	"geolocate" 		=> "Get current lat-long using geolocation",
	"dump_calllog" 		=> "Get call log"

Also the android launcher was converted to a service to work in the background to avoid killing the app when the main activity is closed