Gemfile.lock wasn't up to date :-?
Enable selected paths on maintenance mode
Document new feature
Well, that was embarrassing
Allow certain paths to be bypassed

Added a new "without+ configuration option to specify paths
that must be bypassed.

Thanks to @pablobm for the pull request.
Closes #5
Release version 2.0.0 and print upgrade notice.

This new version drops built-in filtering of /assets, and leaves
all paths to be excluded from maintenance to be configured by
the user.