Adjust Principal Class Name in plist

Author: winkelsdorf

CommentWrapperExt/Info.plist

@@ -29,7 +29,7 @@
 			<key>XCSourceEditorCommandDefinitions</key>
 			<array/>
 			<key>XCSourceEditorExtensionPrincipalClass</key>
-			<string>Comment_Wrapper_Ext.SourceEditorExtension</string>
+			<string>$(PRODUCT_MODULE_NAME).SourceEditorExtension</string>
 		</dict>
 		<key>NSExtensionPointIdentifier</key>
 		<string>com.apple.dt.Xcode.extension.source-editor</string>