Add notebook that illustrates numpy type conversion

Author: gjbex

source-code/numpy-scipy/README.md

@@ -10,3 +10,4 @@ Some examples of numpy and scipy usage.  Mainly intended for benchmarking.
   SVD and matrix multiplications are printed.
 1. `create_h5.py`: Python script to create an HDF5 file that can be used
    by `svd.py`.
+1. julia_set.ipynb`: Jupyter notebook to illustrate numpy type conversion.