details about OAuth2 in general. Fixes #930
details about OAuth2 in general. Fixes #930

Signed-off-by: Claudius Coenen <279a4cf6d7f8da1ddc113bb946b9273d9d938683@amenthes.de>

jackycute/HackMD,jackycute/HackMD,jackycute/HackMD,Yukaii/hackmd,hackmdio/hackmd,Yukaii/hackmd,hackmdio/hackmd,hackmdio/hackmd,Yukaii/hackmd