Fix UrbanLadder typo
Added C42 to sponsors page.
Merge pull request #41 from GardenCityRuby/add-c42-to-sponsors-page

Added C42 to sponsors page.
Try out config.yml based permalink setup
Revert "Try out config.yml based permalink setup"

This reverts commit cbbca95a613856bc79988a1fcd461decc0f45587.
Use site.url instead of adding links in config.yml