Initial run complains about missing help.txt

After running `ecosystem-docs` for the first time and entering my login credentials I get the following error:

```
events.js:141
throw er; // Unhandled 'error' event
^

Error: ENOENT: no such file or directory, open 'help.txt'
at Error (native)
```

This seems to be coming from https://github.com/hughsk/ecosystem-docs/blob/master/bin.js#L85