Quarterly report pursuant to Section 13 or 15(d)

2. Summary of Significant Accounting Policies (Details)

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2. Summary of Significant Accounting Policies (Details) - shares
6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Antidilutive shares excluded from EPS 47,595,157 66,789,744
Options [Member]    
Antidilutive shares excluded from EPS 37,301,300 35,313,541
Warrants [Member]    
Antidilutive shares excluded from EPS 5,006,355 21,507,270
Convertible Notes [Member]    
Antidilutive shares excluded from EPS 5,287,502 9,968,933