fix: apply changes from #14 to grammar file

Author: erisu

lib/parser/pbxproj.js

@@ -1,4 +1,4 @@
-/**
+/*
     Licensed to the Apache Software Foundation (ASF) under one
     or more contributor license agreements.  See the NOTICE file
     distributed with this work for additional information
@@ -16,7 +16,6 @@
     specific language governing permissions and limitations
     under the License.
 */
-
 /*
  * Generated by PEG.js 0.10.0.
  *

lib/parser/pbxproj.pegjs

@@ -17,18 +17,6 @@
     under the License.
 */
 
-{
-    function merge_obj(obj, secondObj) {
-        if (!obj)
-            return secondObj;
-
-        for(var i in secondObj)
-            obj[i] = merge_obj(obj[i], secondObj[i]);
-
-        return obj;
-    }
-}
-
 /*
  *  Project: point of entry from pbxproj file
  */
@@ -62,7 +50,7 @@ AssignmentList
         var returnObject = list[0][0];
         for(var i = 1; i < list.length; i++){
             var another = list[i][0];
-            returnObject = merge_obj(returnObject, another);
+            returnObject = Object.assign(returnObject, another);
         }
         return returnObject;
     }