[ToDo] Added Thornberg ideas
[PowerUps] Added ambushShot
[PowerUps] Added Power Shot
[Game] Difficulty Level
[Game] Difficulty Level (back button)
Merge branch 'gh-pages' of https://github.com/scottrippey/xquestjs into gh-pages
Merge branch 'The-Thornbergs' into nested-scenes
Merge branch 'gh-pages' into nested-scenes