WIP: readme main

README.md

-# Gargantext Main repositories
+<div align="center"><img height="180" src="./images/logo.png"></div>
+&nbsp;
+
+# Gargantext Main - Infos and repositories
 
 Gargantext is a Free Software, [GNU aGPLV3 and CECILL variant affero
 compliant licence for French
@@ -13,13 +16,13 @@ Its first scientific investigators are:
 
 ## New Version of Gargantext (v4)
 
-- [Backend](https://gitlab.iscpif.fr/gargantext/haskell-gargantext)
-- [Frontend](https://gitlab.iscpif.fr/gargantext/purescript-gargantext)
+- [Backend instance repository](https://gitlab.iscpif.fr/gargantext/haskell-gargantext)
+- [Frontend instance repository](https://gitlab.iscpif.fr/gargantext/purescript-gargantext)
 
 ## Previous version of Gargantext (v3)
-(Not maintained any more, release of v4 soon)
+> /!\ (Not maintained any more, release of v4 soon)
 
-- [Current prod version](https://gargantext.org)
+- [Current prod version (v3)](https://gargantext.org)
 - [Code Source](https://github.com/ISCPIF/gargantext)