Update readme and add Ryujinx.rb

Casks/r/ryujinx.rb

@@ -0,0 +1,17 @@
+cask "ryujinx" do
+  version "1.2.80"
+  sha256 "a1d908595b9a6abdf607cd2b5d1af8f6fc761964e1538df1825bb8f736732fcc"
+
+  url "https://github.com/Ryubing/Ryujinx/releases/download/#{version}/ryujinx-#{version}-macos_universal.app.tar.gz"
+  name "Ryujinx"
+  desc "Nintendo Switch emulator written in C#, originally created by gdkchan"
+  homepage "https://github.com/Ryubing/Ryujinx"
+
+  app "Ryujinx.app"
+
+  zap trash: [
+    "/Library/Application Support/Ryujinx",
+    "~/Library/Preferences/org.ryujinx.Ryujinx.plist",
+    "~/Library/Saved Application State/org.ryujinx.Ryujinx.savedState",
+  ]
+end

README.md

@@ -2,18 +2,19 @@
 
 A personal collection of un-notarized Homebrew Casks for applications I personally use.
 
-## How do I install these formulae?
+## How do I install these casks?
 
-`brew install red6785/miscbrew/<formula>`
+`brew install red6785/miscbrew/<cask>`
 
-Or `brew tap red6785/miscbrew` and then `brew install <formula>`.
+Or `brew tap red6785/miscbrew` and then `brew install <cask>`.
 
 Or, in a [`brew bundle`](https://github.com/Homebrew/homebrew-bundle) `Brewfile`:
 
 ```ruby
 tap "red6785/miscbrew"
-brew "<formula>"
+brew "<cask>"
 ```
+Note that these will be blocked by Apple Gatekeeper, as they are not signed. To prevent this, you can add the flag `--no-quarantine` to the command.
 
 ## Documentation