How to use : Add a file which contains your key collumn and the intended output value
If you want to test the exe you can just have the all_data.csv file in the same folder
then use the word 'hash' for the first output
and then the word 'national_insurance_number' for the second output
then to test use 'other' it is the easiest to test that there is an output
however if you know your hash numbers then you can use it as normal on any file
just make sure that the file and exe are in the same folder