[Ruby] Add Google and Facebook integration docs.
[Ruby] Grammar fix.
Indentations and forgotten ends.
Google and Facebook Directories can't be a default account/group stores warning.
Aliases for account store mappings.
Added Custom Data Methods.
Merge commit 'refs/pull/50/head' of https://github.com/stormpath/stormpath.github.io into source
Social Login accessToken for Google