[feat]希望支持给cheerio配置参数

[Yan2603]

默认情况下cheerio.load会返回有html head body的节点，能否支持一下配置可以去掉，在vue-router场景会影响DOM的默认结构

/**
 * html => vue file template
 * @param  {[type]} html [description]
 * @return {[type]}      [description]
 */
var renderVueTemplate = function(html, wrapper) {
  var $ = cheerio.load(html, {
    decodeEntities: false,
    lowerCaseAttributeNames: false,
    lowerCaseTags: false
  });

  var output = {
    style: $.html('style'),
    // get only the first script child. Causes issues if multiple script files in page.
    script: $.html($('script').first())
  };
  var result;

  $('style').remove();
  $('script').remove();

  result =
    `<template><${wrapper}>` +
    $.html() +
    `</${wrapper}></template>\n` +
    output.style +
    '\n' +
    output.script;

  return result;
};