Adding a get_dot function in Automata + jupyter example

VERSION

examples/3.pautomac_light.train.dot.gv

examples/3.pautomac_light.train.dot.gv.pdf

examples/GraphvizTests.ipynb

examples/graphivz-output/3.pautomac_light.train.gv

examples/graphivz-output/3.pautomac_light.train.gv.pdf

examples/graphivz-output/3.pautomac_light_man.train.gv

examples/graphivz-output/3.pautomac_light_man.train.gv.pdf

examples/graphivz-output/round-table.gv

examples/graphivz-output/round-table.gv.pdf

setup.py

splearn/__init__.py

splearn/automaton.py

splearn/datasets/data_sample.py

splearn/hankel.py

splearn/spectral.py

splearn/tests/datasets/get_dataset_path.py

splearn/tests/test_automaton.py

splearn/tests/test_base.py

splearn/tests/test_data_sample.py