update README

README.md

@@ -2,6 +2,18 @@
 
 Extra contents beyond [WaniKani](https://www.wanikani.com).
 
+## [Yomichan](https://foosoft.net/projects/yomichan/) or whatever custom vocab-to-Anki creator, card sorter
+
+This also sorts any vocabulary by WaniKani levels. I also have an old project of [Kanji beyond WaniKani](https://community.wanikani.com/t/fake-levels-61-70-or-%E7%84%A1%E9%99%90-infinity/16399). You can also use that (or opt not to).
+
+- Clone this repo
+- Get `WANIKANI_API_KEY` from <https://www.wanikani.com/settings/personal_access_tokens>
+- Install [Node.js](https://nodejs.org/en/), `npm i -g yarn`, `yarn`
+- Confirm the constants in [`scripts/sort-anki.ts`](https://git.polv.cc/polv/wk-extra/src/branch/main/scripts/sort-anki.ts)
+- Run `yarn ts scripts/sort-anki.ts`
+
+Note that [Kanji beyond WaniKani](https://community.wanikani.com/t/fake-levels-61-70-or-%E7%84%A1%E9%99%90-infinity/16399) **may be modified** or sorted in the future, depending on [Kanji with common components that aren’t Wanikani radicals](https://community.wanikani.com/t/x/56335) and my experience.
+
 ## [Kanji with common components that aren’t Wanikani radicals](https://community.wanikani.com/t/x/56335)
 
 - [Wanikani Kanji that can serve as radicals](https://git.polv.cc/polv/wk-extra/src/branch/main/docs/kanji/radicalized-kanji.md)
@@ -22,3 +34,8 @@ I also consider stepping into fonts' territory, if I deem that necessary; for ex
 - I will create a full website, if necessary to render "fonts".
 
 It is also possible that I will add Chinese contents (Hanzi) in the future.
+
+## Extras
+
+- Typed [AnkiConnect](https://foosoft.net/projects/anki-connect) can be found at [`src/ankiconnect.ts`](https://git.polv.cc/polv/wk-extra/src/branch/main/src/ankiconnect.ts)
+- Typed [WaniKani API v2](https://www.wanikani.com/api/v2) can be found at [`src/wanikani.ts`](https://git.polv.cc/polv/wk-extra/src/branch/main/src/wanikani.ts)