updates for a couple of items

1) fixes for python 2 and 3 support at the same time
2) added function for reuse
updates for a couple of items

1) fixes for python 2 and 3 support at the same time
2) added function for reuse
Merge branch 'develop' of github.com:wyattearp/export-surround-to-git into develop

Conflicts:
	export-surround-to-git.py
Merge pull request #18 from wyattearp/develop

DRYing POpen Calls