Now create an INSTANCE_NAME.sock in @localstatedir@/uwsgi_sockets
Note : the localstatedir is wrong -_- /usr/var instead of /var........

Bufixes in start & stop functions
Add a -f --foreground option allowing to run an instance in foreground
There is one problem left : the unix socket creation is not done in the instance directory...

Bugfixe in start
implements stop
add info in instance details

On configuration setter

SLIM is now able to edit configuration from CLI, to start instances etc.