update rspec should syntax to expect
quick fix for finding eponymous parents
add tests on eponymous parent traversal
`Rubocop` is now `RuboCop`

See https://github.com/bbatsov/rubocop/commit/ff167d8f202baf7a68955db0aaf0dc29afb7e7ee
Add <head> to 404 so Livereload can add its script to the page
Add a protective require
Make option documentation consistent.
Test gzip extensions option.
Accept list of paths to exclude from gzipping.
Update listen gem
rubocoping
Update listen code
fix specs on windows & update gemfile
Update badges
Update README.md