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Summary of significant accounting policies (Tables)
6 Months Ended
Jul. 31, 2014
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]
          Fair value measurements at reporting date using:  
          Quoted prices in           Significant  
          active markets for     Significant other     unobservable  
          identical liabilities     observable inputs     inputs  
Description   Fair Value     (Level 1)     (Level 2)     (Level 3)  
                         
Warrant and convertible note derivative liability at July 31, 2014 $ 489,572     -     -   $ 489,572  
                         
Warrant and convertible note derivative liability at January 31, 2014 $ 46,985     -     -   $ 46,985