Quarterly report pursuant to Section 13 or 15(d)

8. Stock options and warrants (Details-Warrant activity)

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8. Stock options and warrants (Details-Warrant activity) - 6 months ended Jun. 30, 2015 - Warrants - $ / shares
Total
Beginning Balance 5,692,087
Granted 916,667
Exercised (200,000)
Cancelled (100,000)
Ending Balance 6,308,754
Weighted Average Exercise Price, Outstanding Beginning Balance $ .36
Weighted Average Exercise Price, Granted 0.30
Weighted Average Exercise Price, Exercised .25
Weighted Average Exercise Price, Cancelled .25
Weighted Average Exercise Price, Outstanding Ending Balance $ .36