New title image and more destructable platforms

From a cool comment I received, I've now let there be more destructable platforms and fixed a few issues.

Will be adding a new demo tomorrow for you to play, this one will have the above changes and also end of level if you manage to get to the bottom of the hole ;-)  Looking at adding Boss when you get there, will see if can code one up for tomorrow's new playable demo - keep an eye out!