add valine comment system

[xCss]

add valine comment system.

_config.sample.yml

# Valine comments https://valine.js.org
valine:
  enable: false # if you want use valine, please set enable: true
  appid:  # your leancloud appid
  appkey:  # your leancloud appkey
  notify: false # true/false:mail notify !!!Test,Caution. https://github.com/xCss/Valine/wiki/Valine-%E8%AF%84%E8%AE%BA%E7%B3%BB%E7%BB%9F%E4%B8%AD%E7%9A%84%E9%82%AE%E4%BB%B6%E6%8F%90%E9%86%92%E8%AE%BE%E7%BD%AE
  verify: false # true/false:verify code
  avatar: mm # avatar style https://github.com/xCss/Valine/wiki/avatar-setting-for-valine
  placeholder: Just go go # comment box placeholder

layout/partial/comments.jade

if theme.valine.enable == true
    a#comments
    #vcomments(style="margin:0 30px;")
    script(src='//cdn1.lncld.net/static/js/3.0.4/av-min.js')
    script(src='//cdn.jsdelivr.net/gh/xcss/valine@v1.1.7/dist/Valine.min.js' + '?v=' + theme.version)
    script.
      var valine = new Valine({
        el:'#vcomments',
        notify:#{theme.valine.notify} || false, 
        verify:#{theme.valine.verify}|| false, 
        app_id:'#{theme.valine.appid}',
        app_key:'#{theme.valine.appkey}',
        placeholder:'#{theme.valine.placeholder}',
        path: window.location.pathname,
        avatar:'#{theme.valine.avatar}'
      })

[fyu0h]

同样的配置在next下能够正常使用，但是在anatole下就不行。