Allow list of permissions for bdist

[KeyWeeUsr]

Allows writing of a list of permissions, because the dictionary isn't capable of holding multiple values to a single key other way to me. (multiple permission will be rewritten).

'permissions': ['ACCESS_COARSE_LOCATION', 'ACCESS_FINE_LOCATION',
                'BLUETOOTH', 'BODY_SENSORS', 'CAMERA', 'INTERNET',
                'NFC', 'READ_EXTERNAL_STORAGE', 'RECORD_AUDIO',
                'USE_FINGERPRINT', 'VIBRATE', 'WAKE_LOCK',
                'WRITE_EXTERNAL_STORAGE']

[inclement]

Looks good, thanks. More generally, I guess --permission really should accept a comma-separated list.