Rewrite command-line. (#9)
Rewrite command-line. (#9)

* According to Repl.it this works.

* Fix it to where if they do not provide source it prints out help.

Automatically print out help with no source is provided.

* flake8...

* Fixed bugs in command-line.

Now it should work with ``nsfw_dl -d True -s Rule34Search query`` or with ``nsfw_dl -s Rule32Search query`` perfectly fine.

I however wanted it to be if ``-d`` or if ``--download`` is provided to flip the value of it to true though.

* flake8 again...

IzunaDevs/nsfw_dl