code: def underscore(text, lower=True):
      
      out = joinWords(text, '_')
      if lower:
          return out.lower()
      return out
docs: Splits all the words from the inputted text into being
      separated by underscores
      
      :sa         [[#joinWords]]
      
      :param      text        <str>
      
      :return     <str>
      
      :usage      |import projex.text
                  |print projex.text.underscore('TheQuick, Brown, Fox')