Merge pull request #29 from geekygirldawn/master

Lunch break and logo size consistency
Fixing links
Add the Chef logo
Add Chef as a Gold Sponsor
Merge pull request #30 from nathenharvey/chef-sponsor

Add Chef as a Gold Sponsor
Correct a typo in the image file name

* I should learn how to spell 'getchef'
Merge pull request #31 from nathenharvey/chef-sponsor

Correct a typo in the image file name
added fosdem agenda and stripped out details about how to submit talks