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Significant Accounting Policies (Tables)
9 Months Ended
Jan. 31, 2016
Accounting Policies [Abstract]  
Schedule of Common Stock Equivalents
    January 31, 2016     January 31, 2015  
Stock Options     710,019       544,691  
Stock Purchase Warrants     336,458       203,125  
Total     1,046,477       747,816