There is a sample project in the distribution - it's a regular war file project which you can build with Maven (mvn install and look in the target directory). The sample can also be created with a couple of clicks in the SpringSource Tool Suite (STS): go to File->New->Spring Template Project, and select the Spring Batch Admin Webapp from the list (if it isn't there upgrade STS). In STS you can right click on the project and Run As->Run On Server choose Tomcat or tc Server, and the app will deploy and open a web browser (e.g. localhost:8080/spring-batch-admin-sample). Check out the features for launching jobs and inspecting job executions. If the STS project looks out of date (look at the version numbers in the pom.xml) then you might be able to upgrade by changing the POM, or else you may have to install a nightly update of STS or wait for the next release.
It is really easy to build a custom web application with the ability to inspect job execution data from external processes:
See later in this guide for instructions on how to modify the application and add you own jobs for launching.