One-time PR for Doc Reviews

@croche-okta @wdawson-okta @srinivasanagandla-okta @stsai-okta @lboyette-okta @hoanguyen-okta @karlmcguinness-okta @cwu-okta @tthompson-okta @eklein-okta

Hi team,

Since the material has been pushed to master, this pull request is a little unusual. Please add any comments to the docs here by the end of the day Monday, September 29, 2014. I will make changes and create a new branch and a new PR for the changes. Then, I will discard this PR. 

Please ping me if this doesn't work for you.

Thanks,
Evan
Yes, we should not document response_type currently. Also, this section made me realize we are mixing request *body* and request *params* throughout this document. All of the previous tables should really use some different name (maybe "Attribute" instead of "Parameter") to indicate that the thing belongs in the JSON, versus here, where `force_mfa` is actually a URL query parameter. Note that `relayState` is not a query param, but a JSON attribute.