Config to run local and forks

[giosce]

The version in codeforamerica repo uses a google function to authorize into github.
I make two hardcoded changes to run locally.
It would be better to have these 2 values provided via config file.
Also, we need to find a way to run from forks (so people can test before merging). I don't know if we can use the same Google function and just have these same 2 parameters provided via config file.