Updated to Highlightjs 8.6 with all languages supported.

Removed leap motion plugin from main project

PDF exporting also works with Chromium

Added missing comma on the configuration example

Correct Readme.md -> Theming -> sky

Update index.html

Added https prefix to slideshare iframe link, without this I got a 'not found' error when opening the demo locally.

For those who can't install Google Chrome (e.g. work network policies) but can use Chromium, Chromium does work for creating the pdf. I updated the readme accordingly. Thanks!

Theming/sky.css has dark gray text on light blue background; not white text

Make npm dependency usable by Browserify through npm

typo

Added support for standard transforms

-webkit- stuff only works on webkit browsers.  I'm pretty sure that using the standard `transform:` here works in most modern browsers.