Translation using .pot file
Suppose we want to translate in Dutch language.
Steps :
1. Download poedit software from http://poedit.net/
2. Make your wordpress installation with Dutch language.
3. Add language code in wp-config.php file . For Dutch it is defined as ('WPLANG','nl_NL');
4. Create a .po file for Dutch language from redq-rental.pot(plugins->woocommerce-rental-and-bookings->languages) file with poedit software.
5. Save the .po file with Dutch language code. So the file name will be redq-rental-nl_NL.po and put this file in plugins->woocommerce-rental-and-bookings->languages directory. You will find your language code here http://wpcentral.io/internationalization/
6. Now your Translation complete.