added topics for acronym exercise
added topics for acronym exercise

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