Merge tag '2.6.1' into develop

2.6.1
tox.ini: Install local pies2overrides
.travis.yml: Run py.test, install pies2overrides for py2
Merge pull request #24 from msabramo/tox_use_local_pies2overrides

tox.ini: Install local pies2overrides
Merge pull request #25 from msabramo/travis

.travis.yml: Run py.test, install pies2overrides for py2
Add travis badge to pies
Merge pull request #27 from timothycrosley/feature/fix-issue-26

Add travis badge to pies
Fix StringIO on Python 3
Merge pull request #29 from acdha/patch-1

Fix StringIO on Python 3
Expose StringIO object within module correctly
Merge pull request #37 from timothycrosley/feature/fix-issue-36

Expose StringIO object within module correctly
Update to use configparser instead of conflict with it
Merge pull request #38 from timothycrosley/feature/fix-issue-31

Update to use configparser instead of conflict with it
Bump release to 2.6.2
Merge branch 'release/2.6.2'