next添加访问量

busuanzi_count:
  # count values only if the other configs are false
  enable: true
  # custom uv span for the whole site
  site_uv: true
  site_uv_header: <i class="fa fa-user"></i> 访问人数(UV)
  site_uv_footer: 人
  # custom pv span for the whole site
  site_pv: true
  site_pv_header: <i class="fa fa-eye"></i> 总访问量(PV)
  site_pv_footer: 次
  # custom pv span for one page only
  page_pv: true
  page_pv_header: <i class="fa fa-file-o"></i> 浏览
  page_pv_footer: 次