Derivative Liabilities - Derivative warrant liability (Details) - USD ($)	3 Months Ended
	Oct. 31, 2016	Jul. 31, 2016
Notes to Financial Statements
Balance - Derivative warrant liability Value	$ 1,462,359	$ 2,048,846
Forfeited or expired, value	$ (172,422)
Forfeited or expired, no. of warrants	(54,545,440)
Increase (Decrease) in fair value of derivative warrant liability	$ (414,065)
No. of Warrants - Derivative warrant liability	329,332,081	383,877,521