docs: function template(filePath, locals, fn) {
      filePath = path.join(getConfig('template.folder'), filePath  + '.' + getConfig('template.extension')); // i.e. index -> index.ejs
      return cons[getConfig('template.engine')].call(null, filePath, locals, fn);                            // i.e. cons.swig('views/page.html', { user: 'tobi' }, function(err, html){}
  }