11. Net loss per common share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

11. Net loss per common share (Tables)

	Year ended December 31, 2016	Year ended December 31, 2015
Stock options	$         480,000	$      480,000
Warrants to purchase shares of common stock	19,637,409	6,300,000
	$    20,117,409	$   6,780,000