allow-data-attributes.js

// Update LinkView to allow data attributes
Em.LinkView.reopen({
  init: function() {
    this._super();
    var self = this;
    Em.keys(this).forEach(function(key) {
      if (key.substr(0, 5) === 'data-') {
        self.get('attributeBindings').pushObject(key);
      }
    });
  }
});