Updated README.

README.md

@@ -8,9 +8,8 @@ builder images for [OpenShift](http://www.openshift.com).
 #### Java S2I Builder image
 
 The S2I Java builder can be used to use generate Java S2I builds for
-flat classpath applications. It supports flat-classpath and fat-jar packaged applications, leveraging the [run-java-sh project](https://github.com/fabric8io/run-java-sh),
-as well as applications using the [hawt-app Maven plugin](https://github.com/fabric8io/fabric8/tree/master/hawt-app-maven-plugin)
-for fetching dependencies and building up an appropriate classpath.
+flat classpath applications. It supports flat-classpath and fat-jar packaged applications, leveraging the [run-java-sh project](https://github.com/fabric8io-images/run-java-sh).
+
 
 #### Karaf S2I Builder image
 
@@ -20,6 +19,15 @@ The Karaf S2I Builder image is used for creating S2I builds for
 
 #### Development
 
+The project use [fish-pepper](https://github.com/fabric8io-images/fish-pepper) to generete images/Dockerfiles, so do not directly change `run-java.sh`. 
+Instead:
+- makes your change in [run-java-sh project](https://github.com/fabric8io-images/run-java-sh).
+- download and install [fish-pepper](https://github.com/fabric8io-images/fish-pepper) from `master`.
+- run it like `path/to/fishpepperrepo/fish-pepper.js` both in `./java` and `.karaf` directories.
+
+If you have errors please remove `.fp-git-blocks/` direcoties under both `./java` and `.karaf`.
+
+
 ##### Release Notes
 
 Please keep the [CHANGELOG.md](CHANGELOG.md) up-to-date.