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8. Convertible notes payable (Tables)
3 Months Ended
Mar. 31, 2014
Summary of Investments, Other than Investments in Related Parties [Abstract]  
Convertible Notes Payable
Note  Amount  Issuance Date  Conversion Price in USD  Number of Shares  Effect on Dilution  Maturity Date
 1    90,470   April 18, 2012  $0.45    201,044    0.42%  April 18, 2014
 2    48,530   May 31, 2012  $1.00    48,530    0.10%  May 31, 2014
     $139,000            249,574