bump eco plugin, fix (travis) build
simplify travis build
Merge pull request #321 from pronebird/master

Fix issue #320
bump 0.3.4, add pronebird as maintainer
add test for non trival for loops with continue
move docpad-plugin-eco to dev dependency, fix #327
Update CONTRIBUTING.md
Merge branch 'master' of github.com:js2coffee/js2coffee