Adds a cool background image for our site.
Merge branch 'master' of https://github.com/GalaxyQuest/GalaxyQuestWebsite

Conflicts:
	public/styles/index.css
Merge branch 'master' of https://github.com/GalaxyQuest/GalaxyQuestWebsite
Merge branch 'master' of https://github.com/GalaxyQuest/GalaxyQuestWebsite
Merge branch 'master' of https://github.com/GalaxyQuest/GalaxyQuestWebsite
Implements second iteration of the improving your algorithm page.
Edits chapter 4 to adhere to our theme
Merge branch 'master' of https://github.com/GalaxyQuest/GalaxyQuestWebsite
Merge pull request #47 from chughes87/master

Edits chapter 4 to adhere to format and theme