Add a python interface description in README.
Add a python interface description in README.


robin-lai/liblinear,angleto/liblinear,angleto/liblinear,ShawnHuang/liblinear,cjlin1/liblinear,robin-lai/liblinear,cjlin1/liblinear,ShawnHuang/liblinear,angleto/liblinear,toothacher17/liblinear,Maluuba/liblinear,Maluuba/liblinear,ShawnHuang/liblinear,rokm/liblinear,ShawnHuang/liblinear,rokm/liblinear,toothacher17/liblinear,toothacher17/liblinear,angleto/liblinear,Maluuba/liblinear,robin-lai/liblinear,cjlin1/liblinear,robin-lai/liblinear,rokm/liblinear,toothacher17/liblinear,cjlin1/liblinear,Maluuba/liblinear,rokm/liblinear