Fix related to issue #9

This now works:

    $ java -cp
target/forgerock-rest-demo-1.0.0-SNAPSHOT.jar:/Users/mark/.m2/repository
/com/google/code/gson/gson/2.2.4/gson-2.2.4.jar
org.forgerock.commons.doc.Main `pwd`/Users.json `pwd`/Groups.json
Minor layout changes