Add component example for iterating over vec on model about yew HOT 2 CLOSED

diff --git a/examples/custom_components/src/main.rs b/examples/custom_components/src/main.rs
index 9d29ae8..20f3021 100644
--- a/examples/custom_components/src/main.rs
+++ b/examples/custom_components/src/main.rs
@@ -50,7 +50,7 @@ impl Component<Context> for Model {
     fn update(&mut self, msg: Msg, context: &mut Env<Context, Self>) -> ShouldRender {
         match msg {
             Msg::Repaint => {
-                self.count_buttons.first().unwrap().color = Color::Blue;
+                self.count_buttons.first_mut().unwrap().color = Color::Blue;
                 true
             }
             Msg::ChildClicked(value) => {
@@ -64,12 +64,12 @@ impl Component<Context> for Model {
 impl Renderable<Context, Model> for Model {
     fn view(&self) -> Html<Context, Self> {
         let counter = |model: &CountButton| html! {
-            <Counter: color=model.color, onclick=Msg::ChildClicked,/>
+            <Counter: color=&model.color, onclick=Msg::ChildClicked,/>
         };
         html! {
             <div>
                 <Barrier: limit=10, onsignal=|_| Msg::Repaint, />
-                { for &self.count_buttons.iter().map(counter) }
+                { for self.count_buttons.iter().map(counter) }
             </div>
         }
     }