add unload infos

GUIDE.md

@@ -6,26 +6,38 @@
 ```python
 from hack import Hack
 
-class Yourcheat(Hack):
+class Mycheat(Hack):
     def __init__(self, **kwargs) -> None:
         super().__init__(**kwargs)
+        # Here you can initialize global variables for your cheat
 ```
 
 3. Add the method who will contains the cheat logic, note that:
    - Your method must contains a sub-method and must be added to
-     the `hackloop` at the end of the method (see example below).
+     the `hackloop` at the end of the method (see example below)
 
 ```python
     def mycheat(self) -> None:
-        # Cheat initialization, will run only one time
+        # Cheat initialization, will only run once
 
         def cheat():
             # Your cheat logic, will be looped
 
-        # Setup the loop
+        # Setting up the loop
         self.hack_loop(cheat)
 ```
 
+4. If you need to unload something before closing the app (e.g. restore the
+   initial state of something), you can add a second method called
+   `MYCHEAT_unload` with `MYCHEAT` the same name as the previous method
+
+```python
+    def mycheat_unload(self) -> None:
+        # Called when the app is closed
+```
+
+5. For more examples, see [the cheats already done](./cheats/)
+
 ## Extra infos
 
 - `self.pm` is used to read/write memory