grunt-codekit now supports js concatenation

A final missing piece was added to the plugin for Grunt I made a few months ago: javascript concatenation using CodeKit’s prepend and append directives. Now you might think that this is a useless feature, as we have had the grunt-contrib-concat plugin for ages, but to use that you would have to change your existing project for it to work. Adding support for handling inline build comments like these

// @codekit-prepend "some-file.js"
// @codekit-append "some-other-file.js"
makes it possible to keep using CodeKit&tm; and Grunt at the same time. That means non-Mac developers can still contribute to you project, you don’t have to change any code, and you can keep the nitty-gritty of various builds in Grunt, and just use CodeKit like you normally do. Which was kinda the point for me, since CodeKit < 2 sucked at sharing config between team members (build file changed all the time).