Parse switches from CLI

[nappex]

Parse switches for work directory. If we want to parse work dir we have parse newly component also.

[nappex]

I am not sure about naming the switches, output for working directory is not something obvious at first sight. Working means where inputs are saved or output should going to or both at one place.

[nappex]

Other task what should be done is to make tests.
I have to more explore the ways how to test private functions. I am not really comfort with this explanation unfortunately.

• ways to test private funcs - personally solution 4, point two should be fine?!
• testing private func

[nappex]

We should consider library Optimus for parsing cli arguments as far as the onigumo is CLI app.
It would be fine to keep current solution and when cli become more complicated we can switch to Optimus.

[Glutexo]

We should split the pull request into two separate ones:

• Switch to OptionParser. -> Use OptionParser to parse component #189
• The new output argument.

Also, output may not be the best name for the argument. It is more a “working directory” rather than an output. The actual “output” is what the Materializer spits out.

[Glutexo]

❤️

[nappex]

• Test working dir exist and contains corresponding files
• Test unreachable path, there is a file with same name with working-dir

[Glutexo]

• Test working dir exist and contains corresponding files
• Test unreachable path, there is a file with same name with working-dir

For those, issues #218 and #219 were created.