Refactor find_each_digit variable names to make more readable
Add a roman numeral to arabic master conversion function to put together our output together and a roman numeral to arabic function for input values 1-9.
Add branch for dealing with numbers between 5 and 8.
Add branches for 4, 9 and 0.
Refactor the elseif branch dealing with numbers 1-3 and 5-8.
Add a spec to test for converting blank spaces into 0.
Add a double_digits function