Column name bug fix + more

[WillGiang]

This pull request mainly

• fixes a bug in /ipynb/reid_demographics.ipynb which mixed up data columns
• adds the aforementioned plots to this repository

Less importantly, I strongly dislike the use of newline characters in column names subset.columns = ['Disability\nRate', "Below Poverty Level\nIncome", "Bachelor's\nAttainment"]

We can control the categorical variables like so ax.set_xticklabels(["Below Poverty Level\nIncome", "Bachelor's\nAttainment", "Disability\nRate"], )

[synflyn28]

@WillGiang This looks great to me, though I'm to sure if @leggitta or @bbrewington will want to take a look at this before it is merged or not!