Bootstrap is a theme for Fork CMS. It's designed to take your first steps towards building your next responsive application in Fork CMS.
Note: don't forget to change the filename to "bootstrap.zip" when you're uploading the theme via the backend. Should this not work, you can always copy the theme manually to your /src/Frontend/Themes/ folder.
-- Now optimized for Fork CMS 4.x -- Updated to Bootstrap 3.3.7