Changes:
    Fixes #5
Changes:
    Left Sentence Boundary Flag (lbf) and Right Sentence Boundary Flag
    (rbf) are added for child and parent words as 1/0 feature.
Changes:
    Documentation update after RBF kernel, budget based perceptron and
    verbosity control parameters.
    verbosity control is added
    hyphothesis vector dump capability is added after each training set
    pass.