Add chase AI for enemies and Map tile conversion
Merge branch 'master' into feature/ai
Add AI for enemies, calculate path and chase hero
Fixed issue with the levels generation
Add speed and chase logic for enemies
Return to original game config and add extra line at the end of ai file
Merge from master
Added clean task to gulp
Optimized tileset
Enabled drop probability
Optimized 'this'
Fixed sprite frame for key
Fixed error with last level
Optimized 'self' in level
Fixed minor issues with end scene and earth power
Merge pull request #4 from satanas/feature/ai

AI for enemies
Optimized requestAnimationFrame and cancelAnimationFrame
Optimized randInt, requestAnimationFrame, cancelAnimationFrame, visible, instructions and 'this' in items.js. Added compatibility for other browsers in caf and raf
Optimized tileset
Optimized this and self in all the files