Add an M->Py Compiler Helper to Aid in Code Translation

Created a helper file, `todo/py_compile.py` that creates a .py version of an .m file, which one can reference when translating the code in the notebook.  
It uses the Small Matlab/Octave to Python Compiler, [SMOP](https://pypi.python.org/pypi/smop) to compile m-files to Python.