keen.io coffee-script init

  initKeenIO: (project_id, write_key) ->
    window.Keen = window.Keen || {
      configure: (e) ->
        this._cf = e
      addEvent: (e,t,n,i) ->
        this._eq = this._eq || []
        this._eq.push [e,t,n,i]
      setGlobalProperties: (e) ->
        this._gp = e
      onChartsReady: (e) ->
        this._ocrq = this._ocrq || []
        this._ocrq.push e
    }

    Keen.configure {
      projectId: project_id
      writeKey: write_key
    }

    k = document.createElement 'script'
    k.type = 'text/javascript'
    k.async = true
    url = 'dc8na2hxrj29i.cloudfront.net/code/keen-2.1.0-min.js'
    k.src = "#{document.location.protocol}//#{url}"
    s = document.getElementsByTagName("script")[0]
    s.parentNode.insertBefore k, s