Added the underscore node_module.

node_modules/underscore/amd/pluck.js

@@ -0,0 +1,10 @@
+define(['./map', './property'], function (map, property) {
+
+  // Convenience version of a common use case of `_.map`: fetching a property.
+  function pluck(obj, key) {
+    return map(obj, property(key));
+  }
+
+  return pluck;
+
+});