Clarify documentation.
Clarify documentation.

matuszeman/passport-oauth2,aitnasser/passport-oauth2,theogravity/passport-oauth2-alt,klousiaj/passport-oauth2,gastonelhordoy/passport-oauth2,nfroidure/passport-oauth2,tsabolov/passport-oauth2,jaredhanson/passport-oauth2,caco0516/passport-oauth2-libre,openknowl/passport-openknowl,pristineio/passport-salesforce,tartavull/passport-oauth2