Added plt.show()

See #34

Author: omoindrot

neural-networks-case-study.md

@@ -38,6 +38,7 @@ for j in xrange(K):
   y[ix] = j
 # lets visualize the data:
 plt.scatter(X[:, 0], X[:, 1], c=y, s=40, cmap=plt.cm.Spectral)
+plt.show()
 ```
 
 <div class="fig figcenter fighighlight">