rip out chat component

app.js

@@ -246,73 +246,4 @@ app.listen(app.get('port'), function() {
   console.log('Express server listening on port %d in %s mode', app.get('port'), app.get('env'));
 });
 
-module.exports = app;
-
-/**
- * Chat
- */
-
-
-
-var usernames = {};
-var numUsers = 0;
-
-io.on('connection', function (socket) {
-    var addedUser = false;
-
-    // when the client emits 'new message', this listens and executes
-    socket.on('new message', function (data) {
-        // we tell the client to execute 'new message'
-        socket.broadcast.emit('new message', {
-            username: socket.username,
-            message: data
-        });
-    });
-
-    // when the client emits 'add user', this listens and executes
-    socket.on('add user', function (username) {
-        // we store the username in the socket session for this client
-        socket.username = username;
-        // add the client's username to the global list
-        usernames[username] = username;
-        ++numUsers;
-        addedUser = true;
-        socket.emit('login', {
-            numUsers: numUsers
-        });
-        // echo globally (all clients) that a person has connected
-        socket.broadcast.emit('user joined', {
-            username: socket.username,
-            numUsers: numUsers
-        });
-    });
-
-    // when the client emits 'typing', we broadcast it to others
-    socket.on('typing', function () {
-        socket.broadcast.emit('typing', {
-            username: socket.username
-        });
-    });
-
-    // when the client emits 'stop typing', we broadcast it to others
-    socket.on('stop typing', function () {
-        socket.broadcast.emit('stop typing', {
-            username: socket.username
-        });
-    });
-
-    // when the user disconnects.. perform this
-    socket.on('disconnect', function () {
-        // remove the username from global usernames list
-        if (addedUser) {
-            delete usernames[socket.username];
-            --numUsers;
-
-            // echo globally that this client has left
-            socket.broadcast.emit('user left', {
-                username: socket.username,
-                numUsers: numUsers
-            });
-        }
-    });
-});
+module.exports = app;