> Generate favicon.ico and icons for iOS, Android, Windows 8 and Firefox (OS)

Smart way to generate all those icons with Grunt. Hopefully it will add support for the [180x180px](https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/MobileHIG/IconMatrix.html#//apple_ref/doc/uid/TP40006556-CH27-SW2) which is recommended for the IPhone 6 plus. Update: [The iPhone 6 plus is not using the 180×180](https://github.com/h5bp/html5-boilerplate/pull/1599) icon yet. iPad and iPad mini with @2x display running iOS 8 is using it.