Update README

Author: gjbex

source-code/cython/Numpy/README.md

@@ -8,7 +8,19 @@ to `np.sum`.
 
 ## What is it?
 1. `array_sum.pyx`: Cython implementation of array element summation.
+1. `array_sum_pure.py`: pure Python Cython implementation of array element
+   summation.
 1. `compute_sums.py`: driver script to compare the implementations.
 1. `setup.py`: build script.
+1. `array_init.pyx`: Cython implementation of the initializatio of a numpy
+   array.
+1. `array_init_pure.pyx`: pure Python Cython implementation of the
+   initializatio of a numpy array.
+1. `init_test.ipynb`: Jupyter notebook illustrating the use of both the
+   Cython and pure Python Cython implementations.
+1. `run_pure_sum.py`: Python script to time the non-compiled version of
+   the pure Python Cython implementation of the array sum.
+1. `run_cythonized_sum.py`: Python script to time the compiled version of
+   the pure Python Cython implementation of the array sum.
 1. `Makefile`: make file for building the cython extension and profiling
     the three implementations.