Added documentation

Author: Euregan

README.md

@@ -1,3 +1,32 @@
 # Valentin
 
 A collection of utilities to share across projects.
+
+## Utilities
+
+### `valentin/form`
+
+This utility exposes a hook generator. The hook can be used to validate forms.
+It makes sure the data is valid, and returns properly typed values.
+
+### `valentin/jwt`
+
+This utility exposes functions to create and read a simple JWT. It relies on an
+environment var called `JWT_SECRET`.
+
+### `valentin/Result`
+
+This utility exposes a simple Result object, to handle errors in a more
+functional (and typed) manner.
+
+### `valentin/next/api`
+
+This utility exposes helpers to call the API from the client side. You can use
+`useQuery` to make `GET` calls, and `useMutation` to make `POST`, `PUT` or
+`DELETE` calls. It will automatically forward the current user JWT.
+
+### `valentin/next/endpoint`
+
+This utility exposes helpers to create API endpoints on the server side. More
+information on how to setup an API endpoint can be found in
+[the API section of this documentation](#api).