Tutorial updated

I've updated the tutorial level to use a completely different system for the text. I've got rid of the message boxes. Now the play is continuous. The messages automatically clear as you move through the level and there are no forced pauses. 

• If you need a while to read the message, you can just wait and read it. 
• If you want to crack on at full speed, you can move through the tutorial as fast as you want.

I hope this is better.