docs: update readme

src/plugin.rs

@@ -259,3 +259,20 @@ handle!(TuiIn: |self:Plugin, from|{
         _ => Ok(None)
     }
 });
+
+from_edn!("plugin/lv2" => |jack: &Arc<RwLock<JackConnection>>, args| -> Plugin {
+    let mut name = String::new();
+    let mut path = String::new();
+    edn!(edn in args {
+        Edn::Map(map) => {
+            if let Some(Edn::Str(n)) = map.get(&Edn::Key(":name")) {
+                name = String::from(*n);
+            }
+            if let Some(Edn::Str(p)) = map.get(&Edn::Key(":path")) {
+                path = String::from(*p);
+            }
+        },
+        _ => panic!("unexpected in lv2 '{name}'"),
+    });
+    Plugin::new_lv2(jack, &name, &path)
+});