Fix --skip-bundle option formatting

Signed-off-by: David Celis <me@davidcel.is>
Bump dependencies

Signed-off-by: David Celis <me@davidcel.is>
Always return to the original working directory

Signed-off-by: David Celis <me@davidcel.is>
Add specs for Creperie::Loader

Signed-off-by: David Celis <me@davidcel.is>
Add Travis support

Signed-off-by: David Celis <me@davidcel.is>