anchor.diff:  puts "Hello, World!"
   
   TIP: asciidoctor-fopub takes the pain out of converting a DocBook file to a PDF file like this one.
  -All you need is a Java runtime and this project.
  +All you need is a Java Development Kit (JDK) and this project.
   The rest of the software is fetched and configured by Gradle.
   ----
   
  
positive.code: 
  DocBook-to-PDF conversion using free software made easy! (based on DocBook XSL and Apache FOP)
  
  Using the asciidoctor-fopub project, you can convert any DocBook file into a nicely formatted PDF with nothing more than a Java runtime (JVM).
  All the open source software required to perform the conversion is automatically fetched from the internet the first time you run it.
  
  == Doing is believing
  
negative.code: OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)
  ....
  
  If the Java Devlopment Kit (JDK) is setup correctly, you should be able to type:
  
   $ javac -version
  
  or
  
   $ "$JAVA_HOME"/bin/javac -version"
  
  and see output that looks like:
  
  ....
  javac 1.7.0_25
  ....
  
  If not, you can install a JDK using your system's package manager or by downloading a distribution from the http://www.oracle.com/technetwork/java/javase/downloads/index.html[Java for developers download site].
  
  WARNING: You may encounter problems if you attempt to use the GNU compiler for Java (gcj).
  We recommend using OpenJDK or Oracle Java.
  
  TIP: It's not even necessary to install the JDK on your system.
  Simply set the +JAVA_HOME+ environment variable to the location where you extract the distribution.
  
  Next, you need to retrieve the asciidoctor-fopub project.
  