Show how to use each routing strategy in docs (#2332)

docs/route.md

@@ -214,9 +214,9 @@ Routing without page refreshes is made partially possible by the [`history.pushS
 
 The routing strategy dictates how a library might actually implement routing. There are three general strategies that can be used to implement a SPA routing system, and each has different caveats:
 
-- Using the [fragment identifier](https://en.wikipedia.org/wiki/Fragment_identifier) (aka the hash) portion of the URL. A URL using this strategy typically looks like `http://localhost/#!/page1`
-- Using the querystring. A URL using this strategy typically looks like `http://localhost/?/page1`
-- Using the pathname. A URL using this strategy typically looks like `http://localhost/page1`
+- `m.route.prefix('#!')` (default) – Using the [fragment identifier](https://en.wikipedia.org/wiki/Fragment_identifier) (aka the hash) portion of the URL. A URL using this strategy typically looks like `http://localhost/#!/page1`
+- `m.route.prefix('?')` – Using the querystring. A URL using this strategy typically looks like `http://localhost/?/page1`
+- `m.route.prefix('')` – Using the pathname. A URL using this strategy typically looks like `http://localhost/page1`
 
 Using the hash strategy is guaranteed to work in browsers that don't support `history.pushState`, because it can fall back to using `onhashchange`. Use this strategy if you want to keep the hashes purely local.