+= Repository access for gitweb
+
+The following steps can allow gitweb to filter the available repositories
+according to the authenticated user and the contents of the .gitacl file.
+
+- The web server must require authorization and a valid user for URI's starting
+ with /gitweb. Recommend using a PAM module, since repo_shell also works of
+ the system user credentials.
+- The web server needs to pass the REMOTE_USER environment variable to
+ gitweb.cgi.
+- The contents of the file gitweb.conf.addon must be added to the server's
+ gitweb.conf file, usually found in /etc.
+
+The contents of gitweb.conf.addon essentially define an $export_auth_hook that
+uses repo_shell's test mode to validate read access for the web server
+authenticated user for each repository gitweb can see.
+