Fix some issues with the stomp protocol

The messages produced were not completely compliant with the stomp
protocol. This did not manifest until testing with SSL.

http://stomp.codehaus.org/Protocol

Signed-off-by: Joshua Rubin <jrubin@zvelo.com>

Author: Joshua Rubin

lib/frame.js

@@ -74,13 +74,13 @@ Frame.prototype.as_string = function() {
     }
 
     frame += command + "\n";
-    frame += header_strs.join('\n');
-    frame += "\n";
+    frame += header_strs.join("\n");
+    frame += "\n\n";
 
     if(body)
-        frame += '\n' + body + '\x00';
+        frame += body;
 
-    frame += '\n\x00';
+    frame += '\x00\n';
 
     return frame;
 };