refs #32: small refactor
refs #32: code updated based on deprications
refs #32: can now do underline/italics
refs #32: it is now possible to test headings
Merge branch 'master' into issue_32
Merge branch 'master' into issue_32

Conflicts:
	pydocx/tests/__init__.py
Merge branch 'master' into issue_32
refs #32: removed the != None part for the style
Merge pull request #32 from OpenScienceFramework/issue_32

Update xml test case to make it easier to be used outside of pydocx