official solution to exercise 2 does not pass

Hello,

When I use the official solution which looks like this :

var bytes = [0, 15, 24, 3, 250, 83]
var buff = new Buffer(bytes)
console.log(buff.toString('hex'))

I see this output:

Your submission results compared to the expected:                                                        

                 ACTUAL                                  EXPECTED                                        
────────────────────────────────────────────────────────────────────────────────                         

   "000f1803fa53"                      !=    "7c11bcb6d2"                                                
   ""                                  ==    ""                                                          

────────────────────────────────────────────────────────────────────────────────                         

✗ Submission results match expected                                                                      

# FAIL                                                                                                   

Your solution to Hexadecimal Encoding didn't pass. Try again!  

nodejs version : v0.10.32
workshop version : bytewiser@2.0.1

Roelof

Reproduce the Hexadecimal Encoding exercise 2 using the official solution with Node.js v0.10.32 and workshop version bytewiser@2.0.1. Compare the displayed actual and expected outputs, then trace the exercise's official solution and expected result; it is done when the official solution passes the workshop test.