serveStatic does not append " does not exist" to err.message on 404

[jvanalst]

All other automatic restify.ResourceNotFoundErrors append

" does not exist"

to the end of the err.message.

E.g. on an undefined route:

{
  code: "ResourceNotFound",
  message: "/Makefile does not exist"
}

E.g. on a statically served path:

{
  code: "ResourceNotFound",
  message: "/assets/Makefile"
}

It's a minor inconsistency in the 404 errors messages. Simply 2 line change as well...
Line #36 and line #39 in lib/plugins/static.js

[thisandagain]

👍 Great catch. Mind sending along a pull request?