mv sauce_browsers.yml out of the project root
Merge pull request #12041 from twbs/mv-sauce-into-infra

mv sauce_browsers.yml out of the project root
fix capitalization of iOS
default to latest Firefox version on OS X
Sauce now supports latest Firefox on OS X Mavericks
Fixed typo
Merge pull request #12043 from supergibbs/fixed_typo_in_customize.html

Fixed typo