Update installation instructions

README.md

@@ -7,7 +7,7 @@
 
 ## Installation
 
-    cargo build --release
+    cargo install offline-scrobbler
 
 ## Usage
 
@@ -58,6 +58,13 @@ For example, you have listened to a track one hour ago.  Then you can specify ad
 
 For simplicity, when you invoke scrobbling of an album, the scrobbler analyses all tracks' duration in the album and scrobbles them sequentially until the current moment. Therefore, when you launch the scrobbler, the album will be scrobbled as if you just finished listening to it for an hour.
 
+## Development
+
+    cargo build --release
+
+Publishing is done by GitHub actions for Linux musl, macOS on Intel and Apple Silicon.
+
+
 ## Portability
 
 Works on Linux and macOS.