Note 11 - Subsequent Events (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 24, 2017	Jun. 30, 2017	Jun. 30, 2016
Stock Issued During Period, Shares, Issued for Services		205,499	242,034
Stock Issued During Period, Value, Issued for Services		$ 158,636	$ 228,558
Sale of Units, Value		$ 421,413	$ 314,957
Subscription Agreement [Member]
Sale of Units, Number Of Units Subscribed		561,890	393,698
Sale of Units, Value			$ 314,957
Number of Shares Per Unit		0.5	0.5
Class of Warrant or Right, Exercise Price of Warrants or Rights			$ 1.10
Subsequent Event [Member]
Stock Issued During Period, Shares, Issued for Services	9,211
Stock Issued During Period, Value, Issued for Services	$ 7,700
Sale of Units, Number Of Units Subscribed	49,417
Shares Issued, Price Per Share	$ 0.75
Sale of Units, Value	$ 37,000
Number of Shares Per Unit	1
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 1
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right	0.5
Subsequent Event [Member] | Subscription Agreement [Member]
Sale of Units, Number of Units Subscribed	36,334
Shares Issued, Price Per Share	$ 0.75
Sale of Units, Value	$ 27,000
Number of Shares Per Unit	1
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 1
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right	0.5