Symfony's Assetic configuration to compile CoffeeScript files.

config.yml

# Assetic Configuration
assetic:
    debug:          %kernel.debug%
    use_controller: false
    bundles: [ DunglasChaplinDemoBundle ]
    # java: /usr/bin/java
    filters:
        cssrewrite: ~
        coffee:
            bin: %coffee_path%
            node: %node_path%
            bare: true
            apply_to: "\.coffee$"
        closure:
            jar: "%kernel.root_dir%/Resources/java/compiler.jar"
        yui_css:
            jar: "%kernel.root_dir%/Resources/java/yuicompressor-2.4.7.jar"