refs #37: Added tests showing what should happen with upper roman numerals if a flag is passed in
refs #37: it is now possible to convert root level upper roman lists to headers
refs #37: updates based on code review
Merge branch 'master' into issue_37

Conflicts:
	pydocx/DocxParser.py
	pydocx/tests/__init__.py
Merge pull request #37 from OpenScienceFramework/issue_37

Optionally allow converting root level upper roman lists to headers