This is a simple Roman numeral converter for integers, which happens to be one of the examples of "Coding Katas" that Robert "Uncle Bob" Martin likes to mention in his books and talks on the software craft, hence the project name.

The Roman numeral notation represents integer numbers with letters that have specific values. Wikipedia gives a fairly detailed explanation on different variations and extensions of the notation system. For the sake of this project, a simple a version that covers numbers in the range from 1 to 3999 is considered within scope, i.e. the Vinculum notation for numbers larger or equal to 4000 or Medieval extensions to the notation system such as "N" for representing zero are not considered.

To make use of Ruby's OOP features, the conversion is implemented as a method for instances of the Integer class. As no new separate Roman numeral (sub)class is implemented here, the method is named "to_roman_s", analogue to the string conversion with "to_s" and other conversion methods.

This project uses Ruby 2.6.3 and Rspec as the testing framework. With RVM, you can install this version with rvm install 2.6.3 and create the gemset with rvm gemset create roman-kata.

1. Install bundler with gem install bundler
2. Use bundle to install the Gems
3. Run the tests with rspec