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