Add link to ra-language-hebrew

[alexkubica]

I have forked motro/aor-language-hebrew which was the Hebrew translation for admin-on-rest and converted it to react-admin.
You can see my project here
It's also published on npm though I can't see it on npmjs at the moment of creating this pull request.

[djhi]

Thanks! Can you insert it in the alphabetical order please?

[alexkubica]

@djhi Sure, here: https://github.com/ak-il/react-admin/commit/48ae6dbca28d5f80d5d8603f6c8cc786e644167a

[djhi]

Thanks!