client.home should be able to be requested without an accesstoken

[erewok]

Homedoc is an unprotected endpoint in order to serve token information. However, when it is requested before gain_access method, a NoToken exception is raised even though a token is unnecessary for requesting homedoc.

Maybe bypass NoToken for requesting homedoc?

Seems like work-flow should be: instantiate Client, call gain_access. After that, everything else is possible. Would addressing this lead to a potentially confusing work-flow?