code: function runGame() {
      var totalReward = 0;
      var environment = new exampleWorld.Environment();
      var lastReward = null;
  
      function tick() {
          //Tell the agent about the current environment state and have it choose an action to take
          var action = sarsaAgent.decide(lastReward, environment.getCurrentState());
  
          //Tell the environment the agent's action and have it calculate a reward
          lastReward = environment.takeAction(action);
  
          //Log the total reward
          totalReward += lastReward;
      }
  
      for (var i = 0; i < 100; i++) {
          tick();
      }
  
      return totalReward;
  }
docs: Run a game where we see how high of a total reward we can get in 100 actions
  
  @returns {number} Total reward for this game