If you would like to follow along with the tutorial, download these files. The project zip file simply contains the sample project that the build script is developed against. Part1.xml, Part2.xml and Part3.xml show the build script at the end of their respective parts of the tutorial.
The tutorial can be found at http://www.codingcockerel.co.uk.
The tutorial can be found at http://www.codingcockerel.co.uk.