ember install ember-forge-ui

"ember-addon": {
    "before": "ember-forge-ui"
}

/**
 * Set name of companion ember-forge-ui template addon
 *
 * @param {String} environment
 * @param {Object} appConfig
 * @returns {Object}
 */
config: function( environment, appConfig ) {
    return {
        emberForgeUiTemplateAddon: this.name
    };
}