update README

Author: alessio-perugini

Diff for: README.md

@@ -10,25 +10,25 @@ To get the latest stable version of `arduino-cli` just add this step:
 
 ```yaml
 - name: Install Arduino CLI
-  uses: arduino/setup-arduino-cli@v1
+  uses: arduino/setup-arduino-cli@v2
 ```
 
 If you want to pin a major or minor version you can use the `.x` wildcard:
 
 ```yaml
 - name: Install Arduino CLI
-  uses: arduino/setup-arduino-cli@v1
+  uses: arduino/setup-arduino-cli@v2
   with:
-    version: "0.x"
+    version: "1.x"
 ```
 
 To pin the exact version:
 
 ```yaml
 - name: Install Arduino CLI
-  uses: arduino/setup-arduino-cli@v1
+  uses: arduino/setup-arduino-cli@v2
   with:
-    version: "0.5.0"
+    version: "1.0.1"
 ```
 
 ## Examples