Clarify configuration options

[ethindp]

The sample configuration file that's supposed to explain all of the configuration options doesn't really explain much, and neither does the API documentation. As an example, the SessionID isn't explained. So I don't know if i should put there (it says "your_github_session" but what does that exactly mean? Do I have to go through an OAuth process to get that ID?).

[kinduff]

+1, would love some clarification regarding this field