State the number of violations did Royal Thai Cuisine has during the 2015/5/8 inspection.
Royal Thai Cuisine refers to dba_name = 'ROYAL THAI CUISINE'; 2015/5/8 refers to inspection_date = '2015-05-08'
SELECT COUNT(T3.point_id) FROM establishment AS T1 INNER JOIN inspection AS T2 ON T1.license_no = T2.license_no INNER JOIN violation AS T3 ON T2.inspection_id = T3.inspection_id WHERE T2.inspection_date = '2015-05-08' AND T1.dba_name = 'ROYAL THAI CUISINE'