Updated Howler version (to 1.1.18)
[#465] Clean whitespace

- Also enables a lot of new jshint features to detect bad code patterns before they become a problem!
Merge branch 'master' into 1.1.0-dev

Conflicts:
	src/entity/entity.js
	src/renderable/sprite.js
	src/renderable/textureatlas.js
fixed whitespace merge conflicts
Fixing errors in examples