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Stock Options (Details Narrative) - USD ($)
12 Months Ended
May 31, 2016
May 31, 2015
Stock options number of shares granted 2,500,000  
Stock option expiration year 10 years  
Stock option annual installment percentage 25.00%  
Share-based compensation expense $ 53,424 $ 53,424
Unrecognized compensation expense
Options to purchase common stock exercised (475,000) (950,000)
August 1, 2016 [Member]    
Options to purchase common stock exercised (475,000)