Week 3 finishing up week 2 stuff.
Emily week 3
arrays
gpbrown
Merge branch 'master' of https://github.com/abgoldstein/ccaejs
gpbrown
Merge branch 'master' of https://github.com/KleeKai/ccaejs
Merge branch 'master' of https://github.com/dougfleming/ccaejs
Merge branch 'master' of https://github.com/naclsweet/ccaejs
Merge branch 'master' of https://github.com/gpbrown/ccaejs
Adding week 4 content