$ gem install xash

$ xash file.yml

$ rake test

samples/fizzbuzz.yml

#FizzBuzz
- for: [1..10,
    do: [ ar: [i],
        case: [
            [$i, mod, 15, ==, 0], FizzBuzz,
            [$i, mod, 3, ==, 0], Fizz,
            [$i, mod, 5, ==, 0], Buzz,
            do: [$i]
        ]
    ]
]

see wiki

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request