Significant Accounting Policies - Schedule of Common Stock Equivalents (Details) - shares	3 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Common stock equivalent shares	175,479,948	128,563,281
Stock Options [Member]
Common stock equivalent shares	108,188,281	87,938,281
Stock Purchase Warrant [Member]
Common stock equivalent shares	67,291,667	40,625,000