Ruby: lambda style.
fix typo.
Ruby: class base style.
Merge pull request #1 from takano32/master

Ruby: Exception Style
Merge pull request #2 from takano32/ruby/lambda

Ruby: lambda style.
Merge pull request #4 from takano32/ruby/class_base

Ruby: class base style.
Test for ruby
Test document
Merge pull request #3 from takano32/php/variable_function

fix typo.
Merge pull request #5 from kobake/test-sample

Checking FizzBuzz result for ruby.
Ruby: recursive style.