Update main.scss (Add missing semicolon)

Call window.localStorage moved into try catch

fix styles for IE9: add -ms-transform

fixes type error surrounding `event.targetTouches`

Updated contributors username.

I changed my GitHub username and the old link doesn't work anymore.

CONTRIBUTING.md: sass --unix-newlines

CONTRIBUTING.md typo fix

fix positions of tile numbers

Update README.md

Spelling fix.

code cleanup