Command not found while installing engine

[VencaCZ]

After running

o3tanks install engine --branch development

It finishes with

Please run the following commands (or use your preferred GIT client):
cd /var/lib/docker/volumes/o3tanks-source_development/_data
git lfs install
git lfs pull

Then, resume the current operation using:
o3tanks install engine --force development

but when you try to run command mentioned at the end you will get

o3tanks: error: unrecognized arguments: development

If you try yo run original command again there will be a new error

ERROR: Engine version 'development' is already installed with a different build workflow (Project / Source)

[loherangrin]

The command is missing the parameter name identifying the origin (--branch) that you want to clone. From what you have used before, it should be:

o3tanks install engine --branch development --force

I will fix it in PR related to issue #56, since I think that the last message can be improved further too.