code: def _add_mermaid_js(self):
          
          self.add_javascripts('{}/js/jquery-1.11.3.min.js'.format(self.resources_path))
          self.add_javascripts('{}/js/mermaid.min.js'.format(self.resources_path))
          self.add_stylesheets('{}/css/mermaid.css'.format(self.resources_path))
          self.main_soup.script.append('mermaid.initialize({startOnLoad:true  });')
docs: add js libraries and css files of mermaid js_file