Merge tox commands in INSTALL.md? about frescobaldi HOT 2 CLOSED

$ tox -e mo-generate linux-generate
usage: tox [-h] [--colored {yes,no}] [-v | -q] [--exit-and-dump-after seconds] [-c file] [--workdir dir] [--root dir] [--runner {virtualenv}] [--version] [--no-provision [REQ_JSON]] [--no-recreate-provision] [-r] [-x OVERRIDE]
           {run,r,run-parallel,p,depends,de,list,l,devenv,d,config,c,quickstart,q,exec,e,legacy,le} ...
tox: error: unrecognized arguments: linux-generate
hint: if you tried to pass arguments to a command use -- to separate them from tox ones