Added the underscore node_module.

node_modules/underscore/amd/defer.js

@@ -0,0 +1,9 @@
+define(['./partial', './delay', './underscore'], function (partial, delay, underscore) {
+
+	// Defers a function, scheduling it to run after the current call stack has
+	// cleared.
+	var defer = partial(delay, underscore, 1);
+
+	return defer;
+
+});