Polling fallback message help

Motivated by: #284. [ci skip]
Yes, just update the PR and we're done here - and we can switch back to the original issue.

Also, since we work in different time zones, you can skim through the following 2 sections for things we've missed (I think they even mention Sass somewhere):
- https://github.com/guard/listen/wiki/Quickfixes%2C-known-issues-and-workarounds
- https://github.com/guard/listen/wiki/Troubleshooting