Craft\m160811_000000_seomatic_addVimeo::safeUp PHP Method

    public function safeUp()
    {
        // specify columns and AttributeType
        $newColumns = array('vimeoHandle' => ColumnType::Varchar);
        $this->_addColumnsAfter("seomatic_settings", $newColumns, "githubHandle");
        $this->alterColumn('seomatic_settings', 'vimeoHandle', array(ColumnType::Varchar, 'maxLength' => 50));
        // return true and let craft know its done
        return true;
    }