Annual report pursuant to Section 13 and 15(d)

NOTE 12 - STOCKHOLDERS??? EQUITY (Details) - Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range

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NOTE 12 - STOCKHOLDERS’ EQUITY (Details) - Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range - $ / shares
 12 Months Ended
May 31, 2017
May 31, 2018
May 30, 2017
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]      
Number of warrants outstanding (in Shares)   4,700,988 0
Weighted average remaining contractual life   3 years 357 days  
Weighted average exercise price of outstanding warrants $ 0 $ 0.69  
Number of warrants exercisable (in Shares)   4,700,988  
Weighted average exercise price of exercisable warrants   $ 0.69  
Warrant Exercisable at $0.75 [Member]      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]      
Exercise Price   $ 0.75  
Number of warrants outstanding (in Shares)   2,825,988  
Weighted average remaining contractual life   3 years 120 days  
Weighted average exercise price of outstanding warrants   $ 0.75  
Number of warrants exercisable (in Shares)   2,825,988  
Weighted average exercise price of exercisable warrants   $ 0.75  
Warrant Exercisable at $0.60 [Member]      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]      
Exercise Price   $ 0.60  
Number of warrants outstanding (in Shares)   1,875,000  
Weighted average remaining contractual life   4 years 350 days  
Weighted average exercise price of outstanding warrants   $ 0.60  
Number of warrants exercisable (in Shares)   1,875,000  
Weighted average exercise price of exercisable warrants   $ 0.60