Adding Week 3 and 4 slides
Fixing typo in slides
Merging stuff.
Fixed index file
cleaning things up
Merge branch 'master' of https://github.com/jrosebud/jrosebud.github.io

Conflicts:
	lesson04/.DS_Store
	lesson05/.DS_Store
	lesson05/slides/.DS_Store
	lesson06/.DS_Store
	lesson06/slides/.DS_Store
	lesson07/.DS_Store
	lesson07/slides/.DS_Store