Don't try connect_telnet on Windows when '-p' is specified

[github0null]

Hello,

I noticed this case can't work on Windows, because windows serial port name usually is: 'COMxx', not include '/'

rshell/rshell/main.py

Lines 1420 to 1427 in 56f75cf

	def connect(port, baud=115200, user='micro', password='python', wait=0):
	"""Tries to connect automagically via network or serial."""
	if '/' in port:
	connect_serial(port, baud=baud, wait=wait)
	else:
	try:
	ip_address = socket.gethostbyname(port)
	#print('Connecting to ip', ip_address)

So it always try connect_telnet and elapse more time.

#202