Merge pull request #51 from kevincon/master

Updated framework in Products directory to reflect v2.3 changes.
Update README.md
Updated Tesseract to 3.03 and Leptonica to 1.70.
Removed unused lib files.
Merge branch 'master' of github.com:kevincon/Tesseract-OCR-iOS into tesseract3.03
Updated framework files.
Added some null checks to fix a bug where no text is recognized.