Revert "Move startup script into module folder for more intuitive startup"

This reverts commit 02460d3b84b5f64f3873c968464604d5f6b4233f.
Move startup script to root directory

This should make it more simple for people to start the bot.
The installation works by copying the script to a temporary
directory, which is removed at the end. This way we can keep
the command name "willie".