Commented out the 2nd stage of PyChal #1. Also am trying to parse overlapping
patterns using re.finditer() instead of non-overlapping patterns with re.findall().
Our regex search for 'XXXxXXX' was incorrect. We needed to search for
'xXXXxXXXx'. The first search would also match 'XXXxXXXXXXxXXX' which
is of course incorrect. After filtering out all uppercase chars,
however, our answer when entered into the PyChal URL is giving us a 404.
After running a regex to find all patterns 'xXXXxXXXx', we must
run another regex to find the pattern 'XXXxXXX' to weed out strings
like 'xXXXxXXXxx'. Then we can find the answer.