2. Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2016

Accounting Policies [Abstract]

Antidilutive shares

	June 30, 2016		June 30, 2015
Options		23,724,256		21,681,512
Warrants		9,342,892		6,308,754
Common stock issuable upon conversion of notes payable		2,401,667		–
Total		35,468,815		27,990,266