reverted to old plotting scatter_matrix syntax

Mission103Solutions.ipynb

@@ -760,7 +760,7 @@
    ],
    "source": [
     "# Scatter plot that Pandas generates\n",
-    "from pandas.plotting import scatter_matrix\n",
+    "from pandas.tools.plotting import scatter_matrix\n",
     "scatter_matrix(recent_grads[[\"ShareWomen\",\"Unemployment_rate\"]])"
    ]
   },

Mission146Solutions.ipynb

@@ -407,7 +407,7 @@
     }
    ],
    "source": [
-    "from pandas.plotting import scatter_matrix\n",
+    "from pandas.tools.plotting import scatter_matrix\n",
     "scatter_matrix(recent_grads[['Sample_size', 'Median']], figsize=(6,6))"
    ]
   },