Added the underscore node_module.

node_modules/underscore/amd/_createPredicateIndexFinder.js

@@ -0,0 +1,18 @@
+define(['./_cb', './_getLength'], function (_cb, _getLength) {
+
+  // Internal function to generate `_.findIndex` and `_.findLastIndex`.
+  function createPredicateIndexFinder(dir) {
+    return function(array, predicate, context) {
+      predicate = _cb(predicate, context);
+      var length = _getLength(array);
+      var index = dir > 0 ? 0 : length - 1;
+      for (; index >= 0 && index < length; index += dir) {
+        if (predicate(array[index], index, array)) return index;
+      }
+      return -1;
+    };
+  }
+
+  return createPredicateIndexFinder;
+
+});