Obstacles changed (using placeholders), resized
Merge branch 'gh-pages' of https://github.com/drexel-gmap-260-chain-gang/chained-escape into gh-pages

Conflicts:
	main.js
Merge as well as adjusting constructors
Merge branch 'gh-pages' of https://github.com/drexel-gmap-260-chain-gang/chained-escape into gh-pages