Expand the detail in the README that explains how to use the function
Give more context to the two input files and the example data (e.g. the json file as two datasets in it)
Give guidance on how to make the categorizations but explain this will be project specific
Give more detail about the auto categorizations
Include more disclaimers about the limitations of the function (e.g. not taking account links between tables or variables being dependent on eachother)