update README.md from ':' to '.'
update test case management
let zk.conf fit to test cases
modify NULL to null
add creaetPresistentNode method
add publish test
add example pom.xml
remove unused import
add example project
add comment of {Publish, Subscribe}
pre-pom.xml treat files in directory(src/test/java) as resource files, not code files (have validated in systems : winXp, ubuntu). this modify fix it in winXp and ubuntu.