add 1.2.0 scaladoc

adds scaladoc to gh-pages/api/release-1.2.0 and gh-pages/api/latest. To
view the pages in the tbarker9comcast forked repo, go to
http://tbarker9comcast.github.io/sirius/api/latest and
http://tbarker9comcast.github.io/sirius/api/release-1.2.0