allow specs to use ES6 syntax
get sourceMaps working with Karma for Traceur/Webpack
Adds support for sourcemaps for node/mocha tests
Merge pull request #40 from rniemeyer/allow-es6-in-specs

allow specs to use ES6 syntax
Merge pull request #41 from dcneiner/allow-es6-in-specs

Allow es6 in specs
Upgrade to postal 0.11.0