added newlines

src/main/java/com/rometools/modules/thr/io/ThreadingModuleGenerator.java

@@ -59,4 +59,4 @@ public class ThreadingModuleGenerator implements ModuleGenerator {
             element.addContent(inReplyTo);
         }
     }
-}
+}

src/test/resources/thr/threading-main.xml

@@ -22,4 +22,4 @@
 			href="http://www.example.org/entries/1" />
 		<summary>This is a response to the original entry</summary>
 	</entry>
-</feed>
+</feed>