<div class="c-notification__icon">
  <span>
    <i {{bind-attr class=":fa notificationIcon"}}></i>
  </span>
</div>
<div class="c-notification__content">
  {{notification.message}}
</div>
{{#if notification.autoClear}}
  <div class="c-notification__countdown" style={{notificationClearDuration}}></div>
{{/if}}
<span class="c-notification__close" {{action "removeNotification"}} title="Dismiss this notification">
  <i class="fa fa-times"></i>
</span>

<div class="c-notification__icon">
  <span>
    <i class="fa {{notificationIcon}}"></i>
  </span>
</div>
<div class="c-notification__content">
  {{notification.message}}
</div>
{{#if notification.autoClear}}
  <div class="c-notification__countdown" style={{notificationClearDuration}}></div>
{{/if}}
<span class="c-notification__close" {{action "removeNotification"}} title="Dismiss this notification">
  <i class="fa fa-times"></i>
</span>

Replace bind-attr with new handlebars attribute syntax
Replace bind-attr with new handlebars attribute syntax
