update LIBLINEAR from 1.94 to 1.95
update interface for LIBLINEAR 1.95
add regression_model? (method return true if model is regression)
add feature_size (method return the number of features)
change method name (nr_class -> class_size)
add coefficient (method return coefficient for feature and class)
fix rspec messages
add bias (method return bias term corresponding to the class)
use class_size
update README
version 0.0.5
Merge branch 'v0.0.5'