Minor code cleanup and tweaks.
Draft of image sprites, embedded video, and people list.
Update to lesson index page.
Fullscreen background video demo.
Update lessons index page.
Adding the foundation of the weather application
Merge branch 'master' of github.com:shayhowe/beginners-guide-html-css
Reorganizing the files a bit, making the lessons the primary focus.
Cleaning up in class and coursework content.
More clean up on inclass styles, specifically lesson 1