A few minor fixes, related to issue #3

Fixes #3
I agree about the rule -- the problem is that the newline wasn't getting interpreted due to the single quotes. I.e. the file /etc/zk/config.cfg was ending up with a single line, and the content of that line was (literally)
```
# zookeeper config file is managed by puppet.\n
```

Replacing single-quotes with double-quotes made it into 
```
# zookeeper config file is managed by puppet.
[empty line gets created here]
```