[zanata/zanata-api] b07169: chore: use Docker builds for Travis, with caching

[GitHub]

  Branch: refs/heads/integration/master
  Home:   https://github.com/zanata/zanata-api
  Commit: b071690dcc598ddd22a14705b33c9b8ef3755661
      https://github.com/zanata/zanata-api/commit/b071690dcc598ddd22a14705b33c9b8ef3755661
  Author: Sean Flanigan <sflaniga at redhat.com>
  Date:   2015-08-31 (Mon, 31 Aug 2015)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  chore: use Docker builds for Travis, with caching