Starting over -- live demo with Stephen
Converts 1 to I
Added method to convert 5 to V
Added method to convert 10 to X -- changing strategy
Created roman numerals constant as a hash
Changed method to iterate over roman numeral hashes
Added test for converting 256; updated array to include larger value pairs
Updated roman numerals hash
Added additional mapping to hash; added tests
Merge pull request #1 from henryaj/stephen-demo

Merging in working method written during live demo with @stephenlloyd