docs: update v1 to v2 (#13)

README.md

@@ -25,7 +25,7 @@ So, `routets` is deliberately less-featured. It just provides a basic building b
 Create a file with the filename being `<your-route-name>.route.ts`, say `./greet.route.ts` here and the content is like this:
 
 ```typescript
-import Route from "https://lib.deno.dev/x/routets@v1/Route.ts"
+import Route from "https://lib.deno.dev/x/routets@v2/Route.ts"
 
 export default new Route(async () => {
 	return new Response("Hello, World!")
@@ -35,7 +35,7 @@ export default new Route(async () => {
 `routets` comes with a built-in CLI. During development, you can use this and serve your routes immediately:
 
 ```sh
-$ deno install -Af https://lib.deno.dev/x/routets@v1/routets.ts
+$ deno install -Af https://lib.deno.dev/x/routets@v2/routets.ts
 $ routets # or `routets somewhere` to serve `somewhere/greet.route.ts` at `/greet`
 Listening on http://localhost:8000/
 ```
@@ -45,7 +45,7 @@ And you'll see “Hello, World!” at [`http://localhost:8000/greet`](http://loc
 Alternatively, of course you can create your own script:
 
 ```typescript
-import Router from "https://lib.deno.dev/x/routets@v1/Router.ts"
+import Router from "https://lib.deno.dev/x/routets@v2/Router.ts"
 import { serve } from "https://deno.land/std@0.192.0/http/server.ts"
 
 await serve(await new Router({ root: import.meta.resolve("./.") }))
@@ -60,7 +60,7 @@ await serve(await new Router({ root: import.meta.resolve("./.") }))
 Matched parts of the pathname will be passed to the second argument of the handler. For example, when you have `:dynamic.route.ts` with the content being:
 
 ```typescript
-import Route from "https://lib.deno.dev/x/routets@v1/Route.ts"
+import Route from "https://lib.deno.dev/x/routets@v2/Route.ts"
 
 export default new Route(async ({ slugs }) => {
 	return new Response(JSON.stringify(slugs), { headers: { "Content-Type": "application/json" } })
@@ -100,7 +100,7 @@ If you want to insert middlewares before/after an execution of handlers, you can
 To exercise this, here we add support for returning a React element from handlers!
 
 ```typescript
-import Route from "https://lib.deno.dev/x/routets@v1/Route.ts"
+import Route from "https://lib.deno.dev/x/routets@v2/Route.ts"
 import { renderToReadableStream } from "https://esm.sh/react-dom@18.2.0/server"
 import { isValidElement, ReactElement, Suspense } from "https://esm.sh/react@18.2.0"