Fixed Arnaud's conf title and description
Typo in mailchimp's alt
Added Twitter logo
Sponsors logo properly resized
Yeah, it' nice
Updated README
Fixed font-size in mobile view
Merged in feature-18 (pull request #27)

Un beau logo twitter
Merged in feature-improved-sponsors (pull request #26)

Des sponsors plus jolis
Merged in fix-19 (pull request #28)

Fixed Arnaud's conf title and description
Merged in fix-20 (pull request #29)

Fixed font-size in mobile view