Merge pull request #41 from huantianad/main

README.md: add discord server invite link to badge

README.md

@@ -22,6 +22,15 @@ v2.0 also includes optimizations, better interfaces, and more customizations. Ho
 ![GitHub release (latest by date)](https://img.shields.io/github/v/release/2394425147/maipaddx?label=stable)  
 If you prefer a stable build instead, v1.1.1 is the **latest stable version**. You should use this if you prefer a long-term support experience.
 
+## Wait, is there version for iOS?
+Yes (kind of)! You can join the test at [TestFlight Group A](https://testflight.apple.com/join/rACTLjPL) or [TestFlight Group B](https://testflight.apple.com/join/ocj3yptn).
+
+![TestFlight](https://img.shields.io/github/downloads/2394425147/maipaddx/total?label=TestFlight)
+
+Due to restriction of Apple, developer must be 18 (or 19 depends on local law) to publish Applications on App Store. Currently, we borrow JiNALE TEAM's developer account for bringing TestFlight up.
+
+Each public link only can hold 10k players (count by Apple ID), so please NOT duplicate join the test if you already have AstroDX installed.
+
 ## Are there any tutorials on importing?
 
 Yep, they should be on the [wiki](https://github.com/2394425147/maipaddx/wiki/Importing-levels) of this repo.
@@ -34,7 +43,7 @@ We **don't recommend** doing this, as it violates SEGA's policies.
 
 You can open an issue [here](https://github.com/2394425147/maipaddx/issues).
 
-![Discord](https://img.shields.io/discord/892807792996536453)  
+[![Discord](https://img.shields.io/discord/892807792996536453)](https://discord.gg/6fpETgpvjZ)  
 Alternatively, on our Discord server, we also have a help forum dedicated for issues, an faq, as well as a suggestions channel for feedback.
 
 Happy playing!