docs: update README.md and remove allowlist information (#381)

plugins/updater/README.md

@@ -1,7 +1,9 @@
-# Updater plugin
+# Updater
 
 In-app updates for Tauri applications.
 
+- Supported platforms: Windows, Linux and macOS.
+
 ## Install
 
 _This plugin requires a Rust version of at least **1.65**_
@@ -17,7 +19,10 @@ Install the Core plugin by adding the following to your `Cargo.toml` file:
 `src-tauri/Cargo.toml`
 
 ```toml
-[dependencies]
+# you can add the dependencies on the `[dependencies]` section if you do not target mobile
+[target."cfg(not(any(target_os = \"android\", target_os = \"ios\")))".dependencies]
+tauri-plugin-updater = "2.0.0-alpha"
+# alternatively with Git:
 tauri-plugin-updater = { git = "https://github.com/tauri-apps/plugins-workspace", branch = "v2" }
 ```
 
@@ -26,6 +31,13 @@ You can install the JavaScript Guest bindings using your preferred JavaScript pa
 > Note: Since most JavaScript package managers are unable to install packages from git monorepos we provide read-only mirrors of each plugin. This makes installation option 2 more ergonomic to use.
 
 ```sh
+pnpm add @tauri-apps/plugin-updater
+# or
+npm add @tauri-apps/plugin-updater
+# or
+yarn add @tauri-apps/plugin-updater
+
+# alternatively with Git:
 pnpm add https://github.com/tauri-apps/tauri-plugin-updater#v2
 # or
 npm add https://github.com/tauri-apps/tauri-plugin-updater#v2
@@ -42,7 +54,11 @@ First you need to register the core plugin with Tauri:
 ```rust
 fn main() {
     tauri::Builder::default()
-        .plugin(tauri_plugin_updater::Builder::new().build())
+        .setup(|app| {
+            #[cfg(desktop)]
+            app.handle().plugin(tauri_plugin_updater::Builder::new().build())?;
+            Ok(())
+        })
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
 }
@@ -51,7 +67,13 @@ fn main() {
 Afterwards all the plugin's APIs are available through the JavaScript guest bindings:
 
 ```javascript
-import * as updater from "@tauri-apps/plugin-updater";
+import { check } from "@tauri-apps/plugin-updater";
+import { relaunch } from "@tauri-apps/plugin-process";
+const update = await check();
+if (update.response.available) {
+  await update.downloadAndInstall();
+  await relaunch();
+}
 ```
 
 ## Contributing