Chloe

I added a pure javascript version of scrollit that does not require jQuery. Please review

I found that sometimes the keydown/keyup scroll does not work properly because indexLast is being treated as a string, causing active > indexLast. If we make lastIndex = parseInt($('[data-scroll-index]:last').attr('data-scroll-index')); that...

Fixing https://github.com/arqex/react-json/issues/3