docs: function binToHex(binArray){
          var hexString = "0123456789abcdef",
              str = "",
              i;
  
          for(i = 0; i < binArray.length * 4; i++){
              str += hexString.charAt((binArray[i >> 2] >> ((3 - i % 4) * 8 + 4)) & 0xF) +
                      hexString.charAt((binArray[i >> 2] >> ((3 - i % 4) * 8  )) & 0xF);
          }
  
          return str;
      }