code: function(number) 
    {
      var bcd = ((number/10)<<4) + (number%10);
      var retVal = bcd.toString(16);
      if( retVal.length < 2 ){
        retVal = '0' + retVal;
      }
      return retVal;
    }
docs: /*
  @src: https://gist.github.com/joaomaia/3892692
  number2bcd -> takes a number and returns the corresponding BCD in a nodejs buffer object.
  input: 32 bit positive number, nodejs buffer size
  output: nodejs buffer