Enable fast finish in Travis

http://blog.travis-ci.com/2013-11-27-fast-finishing-builds/
Test against Puppet v3.4.0
Merge pull request #56 from ghoneycutt/test_puppet_3_4

Test against Puppet v3.4.0
Merge pull request #55 from ghoneycutt/enable_travis_fast_finish

Enable fast finish in Travis
Merge remote-tracking branch 'upstream/master'