RTP encoding and decoding tests

Signed-off-by: Malric <malricdal@gmail.com>
Merge branch 'master' of github.com:Malric/NMPS

Signed-off-by: Malric <malricdal@gmail.com>

Conflicts:
	RTP.py
	rtp_receive_test.py
	rtp_send_test.py