I added a public class to hold the values of the Roman Numerals and the Arabic Values
I put the Roman Numeral Converter in it's own class so that the code for the tests and the actual code are separated...in my opinion, it's just easier to navigate the code that way
I added an array of the two numerals I need for 1 to 5, I also added a new method to return a list of the roman numerals for the Arabic Value instead of just appending characters to a string.
Now I am compiling again, but 5 is still failing.  My next effort has to be within the ToRomanNumerals Method.  My plan at this stage is to pick the higest possible valued numeral, then subtract that value from the running total until I get zero.
Awesome...the test for 5 passes now...I just have to fix the test for 4.  I am adding additional tests for 6 to 8
Added the additional tests for 6 to 8, all passed