Added the underscore node_module.

node_modules/underscore/amd/partition.js

@@ -0,0 +1,11 @@
+define(['./_group'], function (_group) {
+
+  // Split a collection into two arrays: one whose elements all pass the given
+  // truth test, and one whose elements all do not pass the truth test.
+  var partition = _group(function(result, value, pass) {
+    result[pass ? 0 : 1].push(value);
+  }, true);
+
+  return partition;
+
+});