b10c604c polish pybind11 example, add README.md to f2py example

.gitignore

examples/cython/c_interface/README.md

examples/cython/c_interface/setup.py

examples/cython/c_interface_shared_object/README.md

examples/cython/c_interface_shared_object/libhello/Makefile

examples/cython/c_interface_shared_object/setup.py

examples/cython/c_numpy/README.md

examples/cython/c_numpy/setup.py

examples/f2py/README.md

examples/f2py/test_fibonacci.py

examples/pybind11/README.md

examples/pybind11/setup.py

examples/pybind11/src/pybex.cpp

examples/pybind11/test_pybex.py