Add comment in source pointing to the detected smell

[MichaelSzczepaniak]

The first time I ran the tool, one of smell it flagged was "Assertion Roulette", but when I went into the test file, it was not clear to me whether it flagged a false positive or if I just couldn't detect the smell myself. It would be super helpful if I had some indication (like an inserted comment) of exactly what the tool was thinking was a smell.