var processors = {
        'css':  ['scss', 'css'],        // run the css processor on .scss and .css files 
        'html': ['haml'],               // run the html processor on .haml files 
        'js-strings':   ['js']          // run the js-strings plugin on js files 
    },
    ignores = {
        classes: ['hidden', 'active']   // ignore these class selectors, 
        ids: '*'                        // ignore all IDs 
    };
 
gs.run(processors, ignores);