fix toc + add mdn
Better article on prototypal inheritance in JavaScript

Thanks to @thomaseggum for suggesting this article
Link to twitter
Fix border on image
Remove typo comma
fix github link
Start of thanks section
Fix twitter name.
Add more people
Merge pull request #9 from superherojs/thanks

Start of thanks section
Link to Tine and Thomas
Add John Korsnes, several suggestions on Socialcast
Add section on security
Fix credits section over multiple lines.
Fix TOC spacing
crockford
security toc
Merge pull request #10 from superherojs/security

Add section on security
Less padding on mobile
Normalize body font size using percentage instead