A few fixes for an installable package

Signed-off-by: Suki <suki@missallsunday.com>
No need for a database change

Signed-off-by: Suki <suki@missallsunday.com>
Update the readme

Signed-off-by: Suki <suki@missallsunday.com>
Use the cache sytem

Signed-off-by: Suki <suki@missallsunday.com>