Serial number is hardcoded opposed to a wording on README.md

[asvand]

README.md says "Thing names are based on a dynamically generated serial number presented in the code."

Code says:

# Sample Provisioning Template requests a serial number as a 
# seed to generate Thing names in IoTCore. Simulating here.
#self.unique_id = str(int(round(time.time() * 1000)))
        self.unique_id = "1234567-abcde-fghij-klmno-1234567abc-TLS350" 

Either code or doc needs to be updated

[RaleighSF]

Thanks for the feedback, Andrei!