Make notebooks compatible with both python 2 and python 3

index.ipynb

@@ -7,31 +7,32 @@
     "# Machine Learning Notebooks\n",
     "\n",
     "Welcome to the Machine Learning Notebooks.\n",
-    "**This work is in progress.**\n",
     "\n",
     "## Tools\n",
     "* [NumPy](tools_numpy.ipynb)\n",
-    "* [Matplotlib](tools_matplotlib.ipynb)"
+    "* [Matplotlib](tools_matplotlib.ipynb)\n",
+    "\n",
+    "**This work is in progress, more notebooks are coming soon...**"
    ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
+   "display_name": "Python 3",
    "language": "python",
-   "name": "python2"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {
     "name": "ipython",
-    "version": 2
+    "version": 3
    },
    "file_extension": ".py",
    "mimetype": "text/x-python",
    "name": "python",
    "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython2",
-   "version": "2.7.11"
+   "pygments_lexer": "ipython3",
+   "version": "3.5.1"
   }
  },
  "nbformat": 4,