Gruntfile.js

    compass: {
      options: {
        sassDir: '<%= yeoman.app %>/styles',
        cssDir: '.tmp/styles',
        imagesDir: '<%= yeoman.app %>/images',
        javascriptsDir: '<%= yeoman.app %>/scripts',
        fontsDir: '<%= yeoman.app %>/styles/fonts',
        importPath: '<%= yeoman.app %>/bower_components',
        relativeAssets: false,
        generatedImagesDir: '.tmp/images/generated',
        httpImagesPath: '/images',
        httpGeneratedImagesPath: '/images/generated',
        require: 'susy'
      }
    }