adding guide for adding languages

Languages.md

@@ -9,3 +9,37 @@ Thanks to the community, we have support for the following languages:
 -   German - [Tecur](https://github.com/Tecur)
 -   Chinese - [John Huang](https://github.com/junwhuan)
 
+## Adding new language support
+
+If you want to add support for a new language, you can do so by following these steps:
+
+1. Fork the repository.
+2. Create a new file in `data/books` with the name of the language (e.g. `data/books/pl.json`) with books names.
+3. Import json file to `src/Books.ts` as shown in the example:
+
+```ts
+import _pl from "../data/books/pl.json";
+```
+
+```ts
+const pl = _pl as {
+	[key: string]: string[];
+};
+```
+
+```ts
+Object.keys(books).forEach((b) => {
+	books[b].push(
+		// ...
+		...pl[b]
+		// ...
+	);
+});
+```
+
+(See the other languages for examples.)
+
+4. Add your name to the list above in this file (`Languages.md`).
+5. Create a PR with the changes. (I will review it and merge it.)
+
+**Thank you for your contribution!**

README.md

@@ -9,7 +9,7 @@
 You need to just type for example: `@ John 1:1-6`.
 `@` char is a trigger for suggestion and it can be changed in settings.
 
-I'm from Poland so plugin supports polish books names (eq. `J 1:1-6`, `Mt 24,1`). If you would like it to support your language books names feel free to make PR (you need to create json in `data/books` and add it in `src/Books.ts`).
+I'm from Poland so plugin supports polish books names (eq. `J 1:1-6`, `Mt 24,1`). If you would like it to support your language books names read the guide in [Languages.md](./Languages.md).
 
 **New future 🎉** <br>
 Preview of verse after hover over the link.