First stab at the 2.0.0 update
fixed the HUD (as in the 2.0.0 boilerplate)
step 3 : map update
Fixed collision detection with the world shape

Topped with some TAB to Space conversion :)
fixed collision for the Coin Entity, and others small cosmetics improvements
updated Step 3 with the new instruction for the new shape based collision system
Further update

Most of the tutorial is up-to-date now, only remains a few bugs to
squash and some editorial improvement in the html file
fixed step 8 and 9 !

Remaining issues (all related steps) :
- make the enemy entity non solid
- fix the flickering issue
small editorial change
Several improvements an fixes :

- added basic animation definition to the entity (also allow to clean up
the update function)
- fixed the flickering issues
- Made the enemy player non solid (when colliding with the player
entity)
final 2.0.0 build