Merge branch 'release/v0.0.13'
Merge branch 'develop'
Update core.py
OSX Specific lib search. Issue #11
Merge pull request #13 from gregjurman/feature/osx

OSX Specific lib search. Issue #11
Fix encoding, bump version
Add tesseract->SetVariable support for setting options

Mainly for tessedit_char_whitelist
Fix typo
Merge pull request #16 from Tydus/master

Add tesseract->SetVariable support for setting options
Version bump and quick docs change