receive gcm message done
add Enable status
add progress status
add wake dialog
add preference string array,

follow : http://stackoverflow.com/questions/7361627/how-can-write-code-to-make-sharedpreferences-for-array-in-android
add inviteroom object and can save as a string in preference
Merge branch 'gcm_push' of http://github.com/jihyunsong/keepongoing