Add mention to README.md we don't do Hangouts Chat
Add mention to README.md we don't do Hangouts Chat

Thanks to Google's super confusing naming, people are understandably confusing Hangouts and Hangouts Chat. I just thought a mention of the fact yakyak supports one but not the other one can be useful to users landing on this page.
yakyak/yakyak,averissimo/yakyak,yakyak/yakyak,yakyak/yakyak,averissimo/yakyak,averissimo/yakyak