Have Connection also emit 'end' on stream 'close' event

Should fix missing connect callback call with node-0.8 (#534)

lib/connection.js

@@ -60,6 +60,13 @@ Connection.prototype.connect = function(port, host) {
     self.emit('end');
   });
 
+  this.stream.on('close', function() {
+    // TODO: avoid emitting 'end' twice ?
+    //       node-0.10 emits both 'end' and 'close'
+    //       for streams closed by the peer
+    self.emit('end');
+  });
+
   if(!this.ssl) {
     return this.attachListeners(this.stream);
   }