Add a FAQ

[kasvith]

We need a FAQ section on the docs.

I see a lot of people coming to discussions thread to understand how to use custom scopes etc.
It would be wise to provide some examples and add relevant docs as a FAQ

[p10tyr]

I came here because I am stuck on scopes :(

[kasvith]

We will provide a FAQ section soon(even its out of scope of this library, people often needs it anyway)