Added the underscore node_module.

node_modules/underscore/amd/zip.js

@@ -0,0 +1,9 @@
+define(['./restArguments', './unzip'], function (restArguments, unzip) {
+
+	// Zip together multiple lists into a single array -- elements that share
+	// an index go together.
+	var zip = restArguments(unzip);
+
+	return zip;
+
+});