No transition on application's first render

[samselikoff]

Amazing addon!

I'd love for the library to support disabling animations on application initial render, similar to how Liquid Fire works. If you look at this page from the docs

http://pzuraq.github.io/liquid-tether/#/docs/routed-tethers/step-one

you'll see the modal animates in. I think it should be disabled on first render by default, with options to initially animate.

I solved this in my app currently by adding a {{ui-hooks did-insert=(action 'didInsertApp')}} component and a simple action

didInsertApp() {
  Ember.run.later(() => {
    Ember.$('body').addClass('did-insert-app');
  }, 1);
}

and using this.matchSelector('.app-did-render .liquid-wormhole-element') in my transitions.js.