Unattended semble install

[lehmanjo]

Hi,

for us running in one-off sandboxed environments, it'd be nice to automate the installation. Seems "semble install" doesn't support silent-type installs.

e.g.

semble install --agent=pi  --type=sub-agent

[Pringled]

Hey @lehmanjo, this is a good idea, thanks for the suggestion! We'll try to add this in the next release, I'll keep you posted here.