blueprintsPath() {
    let blueprintPath = path.join(this.root, 'blueprints');

    if (fs.existsSync(blueprintPath)) {
      return blueprintPath;
    }
  }
Returns the path for addon blueprints.

    @public
    @method blueprintsPath
    @return {String} The path for blueprints

    @example
    - [ember-cli-coffeescript](https://github.com/kimroen/ember-cli-coffeescript/blob/v1.13.2/index.js#L26)