Add link to MobileNet documentation

05_transfer_learning_for_image_classification.ipynb

@@ -144,7 +144,9 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### Predict image using `MobileNet`"
+    "### Predict image using [`MobileNet`](https://keras.io/applications/#mobilenet)\n",
+    "\n",
+    "The model has been pre-trained on [ImageNet 1000 classes](https://gist.github.com/yrevar/942d3a0ac09ec9e5eb3a)."
    ]
   },
   {
@@ -252,13 +254,23 @@
     "save_keras_dataset_to_disk(X_train, y_train, X_test, y_test)"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# this only works if you have the tree command\n",
+    "! tree -L 2 data/CIFAR10"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
    "source": [
     "## Use pre-trained `MobileNet` model as base model\n",
     "\n",
-    "load model without last classification layer and set input_shape as closer as possible to original data"
+    "load model without last classification layer and set input_shape as closer as possible to original data. Not all input shapes work, check the [documentation](https://keras.io/applications/#mobilenet)."
    ]
   },
   {