[wip] break out node vs node-webkit builds
fixes
more fixes
handle unbound variable in nvm.sh
fix syntax
xvfb only on linux
pull in improvements from #308
[publish binary]
fix mac node-webkit download [publish binary]
fix appveyor link [skip ci]
publishing fixes [publish binary]
fix PATH on osx
secure keys for appveyor [publish binary]
fix typo
fix finding node-webkit binary with v0.10.0-rc1
Merge pull request #313 from mapbox/travis-refactor

support node-webkit 0.10.0-rc1 with refactored Travis CI builds