Initial commit
init commit
added idea for implementations
added first test
added mapping
one more test pass
added one more test
fixed mistake
add test for numbers > 9999
pass test
added test for 1000
added test on 100
pass all tests
added reke task for calculation
first refactoring done
moved constants to separate file
fix load path
refactor load_path
add test for method .letters_count_till
moved method from rake task to module