Update gitignore (sorry)

electron/node_modules/elementtree/lib/errors.js

@@ -0,0 +1,31 @@
+/**
+ *  Copyright 2011 Rackspace
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+
+var util = require('util');
+
+var sprintf = require('./sprintf').sprintf;
+
+function SyntaxError(token, msg) {
+  msg = msg || sprintf('Syntax Error at token %s', token.toString());
+  this.token = token;
+  this.message = msg;
+  Error.call(this, msg);
+}
+
+util.inherits(SyntaxError, Error);
+
+exports.SyntaxError = SyntaxError;