code: function() {
  		    //io = socket(process.env.PORT || process.env.NODE_PORT || 3333);
          io = socket(http);
  
  		    io.on('connection', function(socket){
              console.log('connection happened');
  			      //Logic for handeling a new connection here.
  			      //ie. registering a user or something similar.
  
  			      //The new connection can send commands.
  			      socket.on('keydown', function(data) {
  				        var index = keysToPress.indexOf(data.key);
  				        if(index === -1) {
  					          keysToPress.push(data.key);
  				        }
  			      });
  
  			      socket.on('keyup', function(data) {
  				        var index = keysToPress.indexOf(data.key);
  				        if(index !== -1) {
  					          keysToPress.splice(index, 1);
  				        }
  			      });
  
  			      socket.on('restart', function(data) {
  				        gameboy_instance.loadROM(rom);
  			      });
  
  		    });
  	  }
docs: What keys we want pressed.