Updated several READMEs and the demo

examples/1.1 Supervised Learning Demo.ipynb

@@ -6,7 +6,7 @@
    "source": [
     "# Hands-on Supervised Machine Learning with Python\n",
     "\n",
-    "Predicting whether an email is spam or not!"
+    "In this example, we'll predict whether or not an email is spam."
    ]
   },
   {

img/README.md

@@ -4,4 +4,4 @@ Within this directory, you'll find the output of the various example scripts.
 The rendering of these images is automated by the 
 [examples/run_all_examples.py](../examples/run_all_examples.py) script.
 
-### Do not directly edit anything in this directory! It's contents are 100% automated!!
+### Do not directly edit anything in this directory! Its contents are 100% automated!!

packtml/neural_net/base.py

@@ -12,6 +12,7 @@ __all__ = [
     'NeuralMixin'
 ]
 
+
 def tanh(X):
     """Hyperbolic tangent.