Spyro fire attack
When you press a key, a vertical line representing fire should appear, moving from spyro further and then disappear.
The line kills enemies. TODO: create gems in enemy.js - kill function
Commented out condition in spyro.js at gravity - jumping seems better then and it doesn't seem to break anything. If it does, feel free to uncomment it.
In collisions.js function circleXline - strange description.