code: def split_readme(readme_path, before_key, after_key, options_key, end_key):
      
      with open(readme_path) as readme_file:
          readme = readme_file.read()
  
      top, rest = readme.split(before_key)
      before, rest = rest.split(after_key)
      _, rest = rest.split(options_key)
      _, bottom = rest.split(end_key)
  
      return (top.rstrip('\n'),
              before.strip('\n'),
              end_key + '\n\n' + bottom.lstrip('\n'))
docs: Return split readme.