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Common Stock (Tables)
3 Months Ended
Mar. 31, 2016
Common Stock Tables  
Summary of warrants outstanding
    Shares of
Common Stock
    Exercise Price     Expiration Date  
                   
Series A     960,000     $ 0.35     July 12, 2019  
Series B     1,326,087     $ 0.46     November 29, 2018  
Series C     3,500,000     $ 0.49     November 29, 2018  
Series D     1,010,000     $ 1.10     June 5, 2020  
Outstanding as of March 31, 2016     6,796,087