collatz-conjecture: Add parameter to placeholder file (#691)
collatz-conjecture: Add parameter to placeholder file (#691)

* collatz-conjecture: Add param to placeholder file

exercism/xpython,behrtam/xpython,jmluy/xpython,pheanex/xpython,pheanex/xpython,smalley/python,mweb/python,smalley/python,N-Parsons/exercism-python,exercism/python,exercism/python,N-Parsons/exercism-python,mweb/python,behrtam/xpython,exercism/xpython,jmluy/xpython