add plugin support/example

src/main.js

@@ -2,13 +2,23 @@ import * as riot from "riot";
 import app from "./components/app.riot";
 
 const main = {
-    init() {
     // start-up actions here
+    init() {
+        // install plugins
+        this.plugins();
 
         // mount components
         this.mount();
     },
 
+    // extend functionality
+    plugins() {
+        riot.install((component) => {
+            // add your own features here
+            component.version = "3.0.0";
+        });
+    },
+
     mount() {
         // register core app component
         riot.register("app", app);