Use construct_color_bar method (#8)

Author: tcmetzger

notebooks/05_styling.ipynb

@@ -597,7 +597,9 @@
     "your data. This includes palettes from\n",
     "[ColorBrewer](http://colorbrewer2.org/#type=sequential&scheme=BuGn&n=3),\n",
     "[D3](https://github.com/d3/d3-3.x-api-reference/blob/master/Ordinal-Scales.md#categorical-colors),\n",
-    "or [Matplotlib](https://matplotlib.org/examples/color/colormaps_reference.html).\n",
+    "or [Matplotlib](https://matplotlib.org/examples/color/colormaps_reference.html)\n",
+    "(see [palettes](https://docs.bokeh.org/en/latest/docs/reference/palettes.html#module-bokeh.palettes)\n",
+    "in the reference guide for a full list).\n",
     "\n",
     "These palettes are available in the ``bokeh.palettes`` module. Palettes are dictionaries\n",
     "with different pre-defined ranges of colors. In many cases, you can access a list\n",
@@ -668,8 +670,9 @@
     "To provide information about what color maps to which numerical value, you can add a\n",
     "color bar to your plot.\n",
     "\n",
-    "To add a color bar, use Bokeh's `ColorBar` object. Adding a color bar is a two-step\n",
-    "process:\n",
+    "To add a color bar, use the ``construct_color_bar()`` method of your glyph. \n",
+    "\n",
+    "Adding a color bar is a two-step process:\n",
     "\n",
     "1. Defining the color bar as a ``ColorBar`` object. Use the `color_mapper`\n",
     "    parameter to define the color mapper to use. In this case, you use the\n",
@@ -686,7 +689,7 @@
    "source": [
     "from bokeh.models import ColorBar\n",
     "\n",
-    "color_bar = ColorBar(color_mapper=circle_scatter.glyph.fill_color.transform)  # create a ColorBar based on the glyph's color mapper\n",
+    "color_bar = circle_scatter.construct_color_bar()  # create a color bar based on the glyph's color mapper\n",
     "mapper_plot.add_layout(obj=color_bar, place=\"right\")  # add the color bar to the plot you created above\n",
     "\n",
     "show(mapper_plot)"
@@ -697,8 +700,8 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "See [palettes](https://docs.bokeh.org/en/latest/docs/reference/palettes.html#module-bokeh.palettes)\n",
-    "in the reference guide for a list of all available palettes."
+    "See [Color bars](https://docs.bokeh.org/en/latest/docs/user_guide/basic/annotations.html#color-bars)\n",
+    "in the user guide for more information."
    ]
   },
   {