def format_paragraph(text, len = 72, indent = 2)
      sentences = [[]]

      text.split.each do |word|
        if sentences.first.present? && (sentences.last + [word]).join(" ").length > len
          sentences << [word]
        else
          sentences.last << word
        end
      end

      indentation = " " * indent
      sentences.map! { |sentence|
        "#{indentation}#{sentence.join(' ')}"
      }.join "\n"
    end
def format_paragraph(text, len = 72, indent = 2)
      sentences = [[]]

      text.split.each do |word|
        if sentences.first.present? && (sentences.last + [word]).join(" ").length > len
          sentences << [word]
        else
          sentences.last << word
        end
      end

      indentation = " " * indent
      sentences.map! { |sentence|
        "#{indentation}#{sentence.join(' ')}"
      }.join "\n"
    end
Returns +text+ wrapped at +len+ columns and indented +indent+ spaces.
 By default column length +len+ equals 72 characters and indent
 +indent+ equal two spaces.

   my_text = 'Here is a sample text with more than 40 characters'

   format_paragraph(my_text, 25, 4)
   # => "    Here is a sample text with\n    more than 40 characters"