Ko browserify js

[kennethormandy]

Referenced against #94.

• Merges @vbwx’s Browserify support
• Removes .es support, preprocess all .js files (also improves Minify consistently #30) and Browserify the ones that the requirements instead
• Fixes how it works when pathing to a project (ex. harp server ~/path/to/my-browserify-proj
• Removes mangling for AngularJS, fixes AngularJS automatic dependency injection broken upon update. harp#418

TODO

• Fix with Framework style apps (possibly needs to know to look for node_modules one level up from public/?
• Test on Windows

[Spone]

Hi there, I can help with the "Test on Windows" part, just ping me when you need it.