Updated readme.

Author: ashleydavis

README.md

@@ -1,2 +1,19 @@
 # nodejs-visualization-example
+
 An example that shows how to use the Nightmare headless browser to capture web-based visualizations under Node.js.
+
+Example code here accopmanies [my article on CSS tricks](https://css-tricks.com/server-side-visualization-with-nightmare/).
+
+## Examples
+
+basic-visualization/
+
+    This sub-directory contains a simple web app swith an example chart using C3.
+
+capture-visualization/
+
+    Working Node.js example that uses headless browser Nightmare/Electron to capture a browser-based visualization (chart) to a PNG image file.
+
+## Data Wrangling with JavaScript
+
+These examples are an extract from my book [Data Wrangling with JavaScript](http://bit.ly/2t2cJu2).