gistfile1.cs

    public class CassetteBundleConfiguration : IConfiguration<BundleCollection>
    {
        public void Configure(BundleCollection bundles)
        {
            bundles.Add<StylesheetBundle>("content/bootstrap/metro-bootstrap", new[] {"metro-bootstrap.less"});
            bundles.Add<StylesheetBundle>("content/bootstrap", new[] {"bootstrap.less"});
            bundles.Add<StylesheetBundle>("content/css/app", new[] {"main.less"});

            bundles.AddPerIndividualFile<StylesheetBundle>("content/css/lib", new FileSearch
            {
                Pattern = "*.less"
            });

            bundles.AddPerIndividualFile<ScriptBundle>("scripts/app", new FileSearch
            {
                Pattern = "*.coffee"
            });
            bundles.AddPerSubDirectory<ScriptBundle>("scripts/lib");
        }
    }