Enable documentation to have auto-generated figures

[amagela]

This PR is tracking #22 and should enable figures to be automatically generated as part of the process.

[amagela]

I think this was failing because the containers were not being set up with Gnuplot and Matplotlib. I just pushed a change that should, hopefully, alleviate that. Will check on it in the morning.

[pearce8]

@amagela It looks like it is still failing because it is missing matplotlib

[amagela]

@amagela It looks like it is still failing because it is missing matplotlib

From what I saw, it seemed like it was failing since matplotlib was installed upstream and the pip command exited with a non-zero status. I added a command line flag to work past it and pushed it. Am awaiting results.

[amagela]

GitHub was having issues earlier today. That was preventing this pipeline from running correctly. The latest build was "successful" except that it was unable to store the resultant document for our manual checking. So, we need to re-run this later when it is back to see if the steps are doing what they should.