Speed up Travis CI
Speed up Travis CI

By using container-based infrastructure.

More info here: http://docs.travis-ci.com/user/workers/container-based-infrastructure/

Also fix a typo.
reynoldsalec/cli,pantheon-systems/cli,hugovk/cli,mkudenko/cli,rvtraveller/terminus,mkudenko/cli,rvtraveller/terminus,hugovk/cli,dustinleblanc/terminus,reynoldsalec/cli,devekko/cli,pantheon-systems/cli,hugovk/cli,rvtraveller/terminus,devekko/cli,Blueprint-Marketing/cli,dustinleblanc/terminus,Blueprint-Marketing/cli,mkudenko/cli,labboy0276/cli,pantheon-systems/cli,labboy0276/cli,reynoldsalec/cli,Blueprint-Marketing/cli,dustinleblanc/terminus,labboy0276/cli,devekko/cli