Added the underscore node_module.

node_modules/underscore/cjs/has.js

@@ -0,0 +1,18 @@
+var _has = require('./_has.js');
+var _toPath = require('./_toPath.js');
+
+// Shortcut function for checking if an object has a given property directly on
+// itself (in other words, not on a prototype). Unlike the internal `has`
+// function, this public version can also traverse nested properties.
+function has(obj, path) {
+  path = _toPath(path);
+  var length = path.length;
+  for (var i = 0; i < length; i++) {
+    var key = path[i];
+    if (!_has(obj, key)) return false;
+    obj = obj[key];
+  }
+  return !!length;
+}
+
+module.exports = has;