Reason for deprecating tokenInfo

[caitlinelfring]

Can you explain the reason for deprecating the tokenInfo from #70?

[hzalaz]

@caitlin615 probably the message is not clear enough (will fix it).
We are trying to move everyone to use /userinfo since if you use our OAuth 2.0 features you need to use that endpoint to get the user information (if you don't use it both endpoints works the same), the only change is that in /userinfo needs the access_token instead of the id_token.