Updated What to check before a pull request (markdown)

What-to-check-before-a-pull-request.md

@@ -17,4 +17,44 @@ So for example (taken from a PR):
 `unquote` will never fail, so it will always return _something_. We have had to implement our own check to see if unquote did anything, this way we can return None.
 
 # Dictionaries or Lists
-If your code requires a dictionary or list of letters or alphabets or the likes, it should go into CipheyDists.
+If your code requires a dictionary or list of letters or alphabets or the likes, it should go into CipheyDists.
+
+[https://github.com/Ciphey/CipheyDists](https://github.com/Ciphey/CipheyDists)
+
+CipheyDists contains all the dictionaries / alphabets required by decoders.
+
+If you have a list in your code that's rather quite long, place it in the [lists directory](https://github.com/Ciphey/CipheyDists/tree/master/cipheydists/list) as a JSON file with an appropriate name.
+
+If you have a dictionary, place it in [translate](https://github.com/Ciphey/CipheyDists/tree/master/cipheydists/translate) with an appropriate name.
+
+Now you can call your dictionary / list.
+
+Your first step is to change the `__init__` of yourr code. Let's look at Galactic Decoder as an example.
+
+```python
+    def __init__(self, config: Config):
+        super().__init__(config)
+        self.GALACTIC_DICT = config.get_resource(self._params()["dict"], Translation)
+```
+
+You don't have to change much here. Just add in this variable and name it something appropriate.
+
+The next part requires some code. Change the `gatParams` method to look like this:
+
+```python
+    @staticmethod
+    def getParams() -> Optional[Dict[str, ParamSpec]]:
+        return {
+            "dict": ParamSpec(
+                desc="The galactic alphabet dictionary to use",
+                req=False,
+                default="cipheydists::translate::galactic",
+            )
+        }
+```
+
+Fill out the description (what it is you're getting from CipheyDists), whether or not it is required for your program to run, and the location of it.
+
+In this case, the Galactic dictionary is in CipheyDists, it is in the translate subdirectory and it is called "galactic". If we look at the [code](https://github.com/Ciphey/CipheyDists/blob/master/cipheydists/translate/galactic.json) we can see this is true.
+
+This is our [resource loader](https://github.com/Ciphey/Ciphey/wiki/Extending-Ciphey#resourceloader). You don't need to know much about it, other than it allows you to select resources without memorising weird file paths.