old_contents: app.boot = {};
  
  app.boot.create = function () {
    app.game.physics.startSystem(Phaser.Physics.ARCADE);
  
    app.game.state.start('load');
  }
new_contents: app.boot = {};
  
  app.boot.create = function () {
    app.game.physics.startSystem(Phaser.Physics.ARCADE);
  
    app.game.state.start('load');
  };
subject: fix semicolon