addProductFile: Remove creation of fileReference & buildFile entries - only add file to "Products" group

Author: sidneys

lib/pbxProject.js

@@ -113,8 +113,9 @@ pbxProject.prototype.addProductFile = function(targetPath, opt) {
 
     file.includeInIndex = 0;
     file.fileRef = this.generateUuid();
+    file.target = opt ? opt.target : undefined;
+    file.group = opt ? opt.group : undefined;
 
-    this.addToPbxFileReferenceSection(file);         // PBXFileReference
     this.addToProductsPbxGroup(file);                // PBXGroup
 
     return file;
@@ -123,7 +124,6 @@ pbxProject.prototype.addProductFile = function(targetPath, opt) {
 pbxProject.prototype.removeProductFile = function(path, opt) {
     var file = new pbxFile(path, opt);
 
-    this.removeFromPbxFileReferenceSection(file);    // PBXFileReference
     this.removeFromProductsPbxGroup(file);           // PBXGroup
 
     return file;