Added the underscore node_module.

node_modules/underscore/amd/isDataView.js

@@ -0,0 +1,15 @@
+define(['./_tagTester', './isFunction', './isArrayBuffer', './_stringTagBug'], function (_tagTester, isFunction, isArrayBuffer, _stringTagBug) {
+
+  var isDataView = _tagTester('DataView');
+
+  // In IE 10 - Edge 13, we need a different heuristic
+  // to determine whether an object is a `DataView`.
+  function ie10IsDataView(obj) {
+    return obj != null && isFunction(obj.getInt8) && isArrayBuffer(obj.buffer);
+  }
+
+  var isDataView$1 = (_stringTagBug.hasStringTagBug ? ie10IsDataView : isDataView);
+
+  return isDataView$1;
+
+});