Some changes to make starting a new server somewhat easier

[nilesjohnson]

I had some trouble starting my own local server for development. Notably:

• google and twitter directories missing
• JSON format for G+ API unclear
• documentation doesn't build

So here are a couple of commits which implement changes and update documentation. Everything should be backward-compatible with an existing installation except for one change -- the "client_ID" key in the JSON data for G+ API was changed to "client_id" since this is the key Google uses.

[nilesjohnson]

Hopefully @cjlee112 will take a look at this soon, before the main branch gets too far ahead . . .

[cjlee112]

I'll try to merge this in today.

[nilesjohnson]

Thanks!