Confirming spec locations prior to review

Is the merged spec the one rendered at http://w3c.github.io/webauthn/?  I plan to review it but want to make sure that I'm reviewing the right thing.  I also want to confirm that https://github.com/w3c/webauthn/blob/master/index.html is the correct source for this document.

Finally, do I submit pull requests for corrections relative to the "master" branch or do I have to do something with the "gh-pages" branch (which I don't understand the use of).

                                                                Thanks all,
                                                                -- Mike