A few minor fixes, related to issue #3

Fixes #3
Great, I'll double check to see if I need to add the -l -r -s or if they're already there (I think they are, just want to check to make sure it'll work). Hmm come to think of it, if the startup script hardcodes 127.0.0.1, wouldn't it be nice if we can make that configurable? I.e. it'd be nice if we can point zk_watcher to zookeeper running on a different host. Though I think that's outside of the scope of this Puppet module.