Merge tag '2.6.0' into develop

2.6.0
Update README.md
Merge pull request #18 from dslackw/patch-1

Update README.md
Fix GH-21 ("u function doesn't work on Python 2")
Add tests.py
Add tox.ini
Merge pull request #20 from msabramo/tox

Add tox.ini
Merge pull request #22 from msabramo/issue_21

Fix issue 21
Bump version to 2.6.1
Improve command
Disable wheel support till I determine correct way to change requirements per python version using it
Merge branch 'release/2.6.1'