improve docs

lib/peer.js

@@ -55,6 +55,7 @@ Peer.prototype._startSocket = function() {
   this._socket.on('error', function(error) {
     util.log(error);
     self.emit('error', error);
+    self.emit('close');
   });
   this._socket.on('close', function() {
     var msg = 'Underlying socket has closed';