Move Styles Tag Content to CSS File
Optimize Some Images

PageSpeed Insights suggested those two.
Use SVG Logo with PNG Fallback, Fix `forkme` Size
Move Example Code to Includes

Makes the code a lot clearer.
Move JS to Includes, Minify, Load Editor Async

This also tries to fix some stuff in the custom JS code, e.g. wrapping
code in self-invoking functions to avoid setting global variables.
Include Non-Minified Files for Easier Maintenance
Merge pull request #73 from killercup/feature/pagespeed

Clean up: Refactor JS includes, use SVG Logo (with fallback)