Fixed linting errors found with flake8

faradayio_cli/faradayio_cli.py

@@ -48,6 +48,7 @@ def setupArgparse():
     # Parse and return arguments
     return parser.parse_args()
 
+
 def checkUserInput(args):
     """Checks user input for validity
 
@@ -131,8 +132,6 @@ def checkUserInput(args):
             raise ValueError("write timeout must be a positive value")
 
 
-
-
 def setupSerialPort(loopback, port, baud, readtimeout, writetimeout):
     """Sets up serial port by connecting to phsyical or software port.