README.rdoc in chunky_png-1.3.0 vs README.rdoc in chunky_png-1.3.1

@@ -52,9 +52,12 @@
   
   # Low level access to PNG chunks
   png_stream = ChunkyPNG::Datastream.from_file('filename.png')
   png_stream.each_chunk { |chunk| p chunk.type }
 
+Also check out the following screencast by John Davison, which illustrates 
+basic usage of the library: http://devcasts.co/ruby-chunky_png-a-great-gem-for-on-the-fly-png-manipulation.
+
 For more information, see the project wiki on http://github.com/wvanbergen/chunky_png/wiki
 or the RDOC documentation on http://rdoc.info/gems/chunky_png/frames
 
 == Security warning