Add support for float features.
Correct a few PEP8 errors
	modified:   hunmisc/liblinear/liblinear_wrapper.py
Trying to explain the int_features method.
	modified:   hunmisc/liblinear/liblinear_wrapper.py
Merge remote-tracking branch 'zseder/master' into liblin_float

Conflicts:
	hunmisc/liblinear/liblinear_wrapper.py
Merge pull request #12 from juditacs/liblin_float

Liblinear wrapper float features