Added a new "localized_posts_dir" parameter

[eko]

Hello,

We have translated our company blog based on Jekyll and we would like to have the following post structure for managing translations:

| _posts
  |- en
    |- my-post-1.md
  |- fr
    |- my-post-1.md

That was not possible actually with your library because you were looking into i18b/<language>/_posts directory.

What I propose with this pull request is to add a new parameter to put into _config.yml file in order to be able to customize the directory where posts are located:

localized_posts_dir: _posts

We would really need this change, please, do not hesitate to let me know if I can achieve this better ;)

Thank you

[eko]

Hello @Anthony-Gaudino, could you please have a look at this PR? It will be very helpful for us to deploy our new blog version.

Thank you :)

[eko]

Hello @Anthony-Gaudino, can you please merge this feature or should I have to point on my fork?

Thank you

[kurtsson]

Hi @eko. The main administrator @Anthony-Gaudino, has disappeared so we are in a bit of a sad state here. I still have access to the Ruby Gem and can release new versions but I do not use any Jekyll sites and have no way of verifying PRs. In short this project really need a new owner, is that you? Or can you atleast verify all PRs so I can merge and make a release?

[eko]

Hi @kurtsson,

Thank you for replying this merge request and for your trust but I do not use Jekyll anymore so I dont’t think I will be the right person to manage this repository.

That being said, I will be happy to help on this specific issue if needed.

Thank you