Transifex and Custom Modules

From the module builder there is this information generated, part of README.md :

This module contains also a sample configuration for Transifex, under the hidden directory [.tx](.tx), so it is possible to manage translation using this service.

For more informations, see the [translator's documentation](https://wiki.dolibarr.org/index.php/Translator_documentation).

There is a [Transifex project](https://transifex.com/projects/p/dolibarr-module-template) for this module.

The mentioned page https://transifex.com/projects/p/dolibarr-module-template is not available any more. Has this page moved to some other place?
The hidden directory is not there (or it is hidden just too well ;). Is this directory somewhere to find?

How does one proceed with a custom module?

  1. Separately from the Dolibarr project on transifex?
  2. Or is there a way to have it under the umbrella of Dolibarr?