Update installation instructions

INSTALL.md

@@ -1,5 +1,6 @@
 git clone https://github.com/advplyr/audiobookshelf-app.git
 cd audiobookshelf-app
+
 npm install
 npm run generate
 
@@ -16,6 +17,15 @@ verifica dove é sdk
 sudo find ~/Library/Android -type d -name "sdk" 2>/dev/null
 /Users/fabio/Library/Android/sdk
 
+creare il file
+
+nano android/local.properties
+
+ed inserire il path di sdk
+
+sdk.dir=/Users/fabio/Library/Android/sdk
+
+
 installa java21 su macos
 brew install --cask temurin@21