Move main script to avoid an import error

[cann3v]

I ran into the problem of running the script when installing from source.
My installing steps:

1. Git clone repo;
2. Create virtual environment;
3. Install deps from requirements.txt;
4. Launch main script as it says in readme:
   python3 mdast_cli/mdast_scan.py -h
   Then i get this error:

Traceback (most recent call last):
  File "/root/progs/mdast-cli/mdast_cli/mdast_scan.py", line 10, in <module>
    from mdast_cli.distribution_systems.app_center import AppCenter
ModuleNotFoundError: No module named 'mdast_cli'

So i just moved mdast_scan.py to the parent directory and it worked.