examples: further adjust README

Author: Cogitri

examples/virtual_methods/README.md

@@ -3,13 +3,10 @@
 Example for how to create a base widget which exposes virtual methods that other widgets can override.
 In this case, a `BaseButton` class is defined which is a gtk::Button with two additional methods:
 
-* `sync_method`: Synchronous method that updates the button label to `BaseButton sync`, or `BaseButton sync {}`
-   where {} is replaced with the `extra_text` parameter, if it's `Some`. This showcases how arguments
-   can be added to virtual methods. The `Option<String>` has to be boxed to be FFI-safe.
+* sync_method`: Synchronous method that updates the button label to `BaseButton sync`, or `BaseButton sync {extra_text}`. This showcases how arguments
+   can be passed to virtual methods. The `Option<String>` has to be boxed to be FFI-safe.
 * `async_method`: Asynchronous method that updates the button label to `BaseButton async`
 
 `DerivedButton` overrides the two methods. During construction `sync_method` is called in
 `BaseButton` which will set the label to `BaseButton sync` for `BaseButton` and to
-`DerivedButton sync` for `DerivedButton`. In the `VirtualMethodsWindow`, `connect_clicked` is
-called on both buttons. Each handler for `::clicked` will invoke the respective `async_method`.
-This updates the button's label accordingly when clicking it.
+`DerivedButton sync` for `DerivedButton`.

examples/virtual_methods/main.rs

@@ -21,7 +21,6 @@ fn main() {
 
         base_button.connect_clicked(|b| {
             let ctx = glib::MainContext::default();
-            let b = b.clone();
             ctx.spawn_local(clone!(@weak b => async move {
                 b.async_method().await.unwrap();
             }));