Stock warrants (Details 2)	6 Months Ended
	Dec. 31, 2014 $ / shares shares
8/17/2012
Exercise Price | $ / shares	$ 0.01
Number of Shares Outstanding | shares	6,250
Expiration Date	Jul. 01, 2016
8/20/2012
Exercise Price | $ / shares	$ 0.01
Number of Shares Outstanding | shares	6,250
Expiration Date	Jul. 01, 2016
9/10/2012
Exercise Price | $ / shares	$ 0.01
Number of Shares Outstanding | shares	10,000
Expiration Date	Jul. 01, 2016
9/13/2012
Exercise Price | $ / shares	$ 0.01
Number of Shares Outstanding | shares	12,500
Expiration Date	Jul. 01, 2016
9/18/2012
Exercise Price | $ / shares	$ 0.01
Number of Shares Outstanding | shares	6,250
Expiration Date	Jul. 01, 2016
10/5/2012
Exercise Price | $ / shares	$ 0.01
Number of Shares Outstanding | shares	2,500
Expiration Date	Jul. 01, 2016
10/25/2012
Exercise Price | $ / shares	$ 0.01
Number of Shares Outstanding | shares	6,250
Expiration Date	Jul. 01, 2016
1/31/2013
Exercise Price | $ / shares	$ 0.01
Number of Shares Outstanding | shares	6,250
Expiration Date	Jul. 01, 2016
10/22/2012
Exercise Price | $ / shares	$ 0.01
Number of Shares Outstanding | shares	25,000
Expiration Date	Jul. 01, 2016
8/24/2012
Exercise Price | $ / shares	$ 0.50
Number of Shares Outstanding | shares	50,000
Expiration Date	Aug. 24, 2016