Add Rasa Open Source to Hactoberfest Event

Can someone from the RASA team add the rasa open source repositories to the Hacktoberfest Event. Its an event that celebrates open source contributions in the form of Pull requests during the month of October. The participants are rewareded with goodies for the required number of PRs that gets merged. Please tag the github issues with hactoberfest so that it comes up when participants search for possible issues to resolve and raise PR.