Update README.md

Author: eunwoo1104

README.md

@@ -18,4 +18,39 @@ async def test(ctx: dico_command.Context):
 
 bot.run()
 ```
+
+### Using Addon/module:
+
+main.py:
+```py
+import dico
+import dico_command
+
+bot = dico_command.Bot("YOUR_TOKEN_HERE", "!", intents=dico.Intents.full())
+bot.load_module("addons.test")
+bot.run()
+```
+
+addons/test.py:
+```py
+import dico_command
+
+
+class AddonTest(dico_command.Addon, name="Addon Test"):
+    @dico_command.command(name="addon")
+    async def example(self, ctx: dico_command.Context):
+        await ctx.send(f"Hello! This is addon `{self.name}`.")
+
+
+def load(bot):
+    # Implementing function `load` is required. You may do any actions here.
+    bot.load_addons(AddonTest)
+
+
+def unload(bot):
+    # Implementing function `unload` is required. You may do any actions here.
+    bot.unload_addons(AddonTest)
+
+```
+
 Note that using async is forced unlike dico itself.