Add loop to keep server active.

MotorControl/MotorServer.py

@@ -60,4 +60,10 @@ class MotorServicer(motorService_pb2_grpc.CarControlServicer):
         server.start()
 
 servicer = MotorServicer()
-servicer.start_server()
+servicer.start_server()
+
+run = True
+while run:
+    inp = input('Please press q to stop the server')
+    if inp == 'q' or inp == 'Q':
+        run = False