Revert "fix(travis): use phantom 2"
Revert "fix(travis): use phantom 2"

This reverts commit 8387cd8bf9236f65d0d4bb54ca5592145dc37fde.

ebryn/backburner.js,BackburnerJS/backburner.js,BackburnerJS/backburner.js,BackburnerJS/backburner.js,ebryn/backburner.js