Title slide
Added Objects chapter
Improved title
Added inheritance chapter
Updated metadata
Checking in progress on inheritance chapter
Converted some slides to Markdown
Fixed transparency
More markdown
Added email address to slides.json
Added "links" slide
Improved Objects chapter
Replaced 'inheritance' chapter by 'oop'
Improvements & added slides
Added 'Organizing Code' chapter
Added link to Superhero.js
Revised objects chapter
Revised OOP chapter
Revised overview
Revised 'Organizing Code' chapter