--- method_added(name)

    ᥽å name ɲä줿˥󥿥ץ꥿ƤӽФޤ
    name ˤɲä줿᥽åɤ̾ Symbol Ϥޤ

        class Foo
          def Foo.method_added(name)
            puts "method \"#{name}\" was added"
          end

          def foo
          end
          define_method :bar, instance_method(:foo)
        end

        => method "foo" was added
           method "bar" was added

    ðۥ᥽åɤɲäФեåˤ
    Object#singleton_method_added [Object/singleton_method_added]
    Ȥޤ

