sketch fs-ci command
always convert branch name to lower case
support lowercase branch name as %{branch} and original branch name as %{BRANCH}
add autocompletion to fs-ci
display what user should do to get fs-ci working
Add docs for fs-ci, update fs-init-config to include example 'ci:' setting
Merge pull request #68 from fs/fs-ci

fs-ci: open branch's CI page in browser