message: Adds invite message
diff: @@ -29,6 +29,7 @@ module.exports = ->
  setupAnalytics()
  initShortCuts()
  initNightMode()
  + showInviteMessage()
  showLimitMessage()
  initConfirmableMessage()
  @@ -154,6 +155,22 @@ initShortCuts = ->
  window.location.reload()
  # TODO: Extract
  +showInviteMessage = ->
  + return unless sd.CURRENT_USER?
  +
  + model = new Backbone.Model
  + id: 'invite_friends'
  + title: 'Send an invitation'
  + body: """
  + If you're enjoying Are.na, <a href='/tools/send-invitation'>invite your friends</a>.
  + """
  +
  + messageView = new MessageView model: model
  +
  + if messageView.isRenderable()
  + $('body').append messageView.render().$el
  +
  +
  showLimitMessage = ->
  return unless sd.CURRENT_USER?
  