Add line-normalization.ipynb for documentation
Add line-normalization.ipynb for documentation

amitdo/ocropy,stweil/ocropy,stweil/ocropy,amitdo/ocropy,zuphilip/ocropy,zuphilip/ocropy,zuphilip/ocropy,tmbdev/ocropy,amitdo/ocropy,stweil/ocropy,tmbdev/ocropy,tmbdev/ocropy