Closes #117 Removing last dependency on ZooUtil

This curator.create() method is called often with the same arguments.  I think it makes sense to create a static method like below in this file or CuratorUtil but it's your call.
```java
public void static createPersistentPath(CuratorFramework curator, String path, byte[] toWrite) {
  curator.create().creatingParentsIfNeeded().withMode(CreateMode.PERSISTENT)
  .withACL(ZooDefs.Ids.OPEN_ACL_UNSAFE).forPath(path, toWrite)
}