Judojs is a command line application written in ruby that leverages the Sprockets JavaScript compiler to create modular javascript applications without having to compile your scripts manually. Judojs also contains a very barebones JavaScript framework to enforce best practices like namespacing and modular separation.
You can install Judojs using RubyGems. This is the easiest way of installing and recommended for most users.
$ gem install judojs
If you want to use the development code you should clone the Git repository and add the binary to your path:
$ git clone git://github.com/textnotspeech/judojs.git
$ export PATH=/path/to/judojs/bin:$PATH