Enable fast finish in Travis

http://blog.travis-ci.com/2013-11-27-fast-finishing-builds/
Test against Puppet v3.4
Merge pull request #67 from ghoneycutt/enable_travis_fast_finish

Enable fast finish in Travis
Merge pull request #68 from ghoneycutt/test_puppet_v3_4

Test against Puppet v3.4
Fix link to travis in README
Merge pull request #70 from ghoneycutt/fix_travis_link_in_readme

Fix link to travis in README