Update wip readme

Signed-off-by: Adrien Kara <adrien@iglou.eu>

README.md

@@ -1,2 +1,8 @@
-# open-stylophone
+# [WIP] Open Stylophone
+[![Go Reference](https://img.shields.io/badge/Pull_requests-Open-g?logo=MusicBrainz)](/pulls)
+[![Go Reference](https://img.shields.io/badge/License-CERN_OHL_P-blue.svg)](LICENSE)
 
+
+This is a small open hardware project, whose goal is to offer a solution to build their own Stylophone, or use a PCB Assembly service.
+
+Fell free to open issues, make PR, or any other participation :)