added sponsors to homepage. Idk what color we want the header to be... pastels...
Merge branch 'master' of https://github.com/create-at-cooper/create-at-cooper into sponsors
made sponsor width 32.5%
Site looks better on mobile devices.
Updated homepage with background colors.
Cleaned up homepage.
Changed subscribe and meetup links to be the whole div.
Merge branch 'sponsors' of https://github.com/SharangP/create-at-cooper into SharangP-sponsors
Fixed presentation.html and made sponsor logos link to their respective pages.