Add badge for WeChat w/ Fluid

wechat-fluid-badge.js

setInterval(updateDockBadge, 500)

function updateDockBadge() {
  var dots = document.querySelectorAll('.nav_view .chat_item .avatar .web_wechat_reddot_middle')

  var badge = [].reduce.call(dots, function(pv, cv) {
    var badge = Math.floor(cv.textContent)

    if (isNaN(badge)) {
      return 0
    }

    return pv + badge
  }, 0)

  if (!badge && document.querySelector('.nav_view .chat_item .avatar .web_wechat_reddot')) {
  	badge = ' '
  }

  window.fluid.dockBadge = badge || ''
}