Modified example_nb_tour to skip local images.

example_nb_tour.ipynb

@@ -613,7 +613,7
      "cell_type": "markdown",
      "metadata": {
       "slideshow": {
-       "slide_type": "slide"
+       "slide_type": "skip"
       }
      },
      "source": [
@@ -628,7 +628,11
       "SVG(filename='python-logo.svg')"
      ],
      "language": "python",
-     "metadata": {},
+     "metadata": {
+      "slideshow": {
+       "slide_type": "skip"
+      }
+     },
      "outputs": [
       {
        "output_type": "pyout",