Update to PR [#6926]
Update to PR [#6926]

The original issue was [#6496], where the --version command breaks in windows.
Eventhough the PR[#6926] solved the problem, it looked a bit complicated of parsing twice. In this fix, I used platform.python_version() to solve the issue. 
Working both in windows and linux.
RasaHQ/rasa_nlu,RasaHQ/rasa_nlu,RasaHQ/rasa_nlu