Can not use forever-webui on forever module

This is the forever module log :

```
error: Forever detected script exited with code: 0
error: Script restart attempt #12
[Sun May 10 2015 17:30:07] WARN: Run: node add_user.js to add a user.
[Sun May 10 2015 17:30:07] ERRR: Error: ENOENT, no such file or directory 'users.json'
error: Forever detected script exited with code: 0
```

However, I have added the users.json.
I think maybe the users.json is on my ~/dev/forever-webui,
and I run forever module on ~/
##

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Start by reproducing the forever-webui launch from a directory different from ~/dev/forever-webui, using the log's users.json error as the symptom. Trace how the application locates users.json and verify the behavior with the existing forever module setup. Done means a correctly placed users.json is found and the restart loop no longer occurs.

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