Mise à jour de 'README.md'

README.md

@@ -114,6 +114,26 @@ IBetsManager <-- IDataManager : BetsMgr
 IGroupsManager <-- IDataManager : GroupsMgr
 ```
 
+## Diagramme de classes simplifié du Stub
+```mermaid
+classDiagram
+direction TB;
+
+IDataManager <|.. StubData
+
+UsersManager ..|> IUsersManager
+StubData --> UsersManager
+
+BetsManager ..|> IBetsManager
+StubData --> BetsManager
+
+GroupsManager ..|> IGroupsManager
+StubData --> GroupsManager
+
+StubData --> "*" User
+StubData --> "*" Bet
+StubData --> "*" Group
+```
 
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