Add documentation about signing and encrypting messages
Basically it's all about creating a shell function which will ease up the following (protocol doesn't matter):
$ qs mail --to me --suject msg "$(gpg --clearsign -o- <(echo "message"))"
So something like that:
function qs-sign-mail()
{
local msg=$1
shift
qs mail "$(gpg --clearsign -o- <(echo $msg))" "$@"
}