added link to index.
docs: changed layout.
docs: changed item order.
docs: removed some docs.
docs: changed header.
docker: removing spaces between environs.
bump to 0.3.8.
docs: added release notes for tsr 0.3.8.
docs: added release notes for 0.8.9.1.
api: add isAdmin Handler
travis: do not run with go tip

It's strange lately. After all, I always run go tip locally.
travis: put tip back

I've reported it to the Go team, let's wait.

http://golang.org/issue/7567
api: remove isAdmin handler and add is_admin in login
cmd: change map[string]string to map[string]interface{}
api: changed get env to send all info about environs.
cmd/tsuru: get-env using the new env api.
cmd/tsuru: get-env support public and private envs.
updated license year.
docs: updated GET env api.
removed unused code.