Added README file
Fixed typo in hook_page_build
Enfore revalidation on cached logged in pages
Added extra header to ensure cache revalidation after login/logout
Set correct cache-control headers
Ensured that max-age is set for logged in users as well
Ensured that drupal's page cache works
Trying to get browser to cache other parts of the page e.i. images
Changed role selection to only library user to simplify varnish configuration
Added flush of all pages from varnish on cache clear
Fixed problem with refresh of drupal page cache
Removed expire headers as they are not need in http 1.1
Updated admin form description
Added expire module as dependency to ensure best perfromance when using the module
Merge branch 'development'