Build does not compile docs example java source

[philwebb]

It's currently hard to write asciidoc example code in eclipse because the /src... folders aren't imported and there's no classpath.

[snicoll]

That was the case in IntelliJ IDEA for me at some point but it seems to be working now, no idea what changed.

Edit: I was looking at the 2.2.x branch so it applies to IntelliJ IDEA too.

[wilkinsona]

There's no source set defined so there's nothing for the IDE to import. That also means that the code isn't getting compile at the moment as part of the build. I don't understand how it can be working in IDEA as the project doesn't define the dependencies that are required for the code to compile.