✨ Add example code blocks for various languages to README and update demo GIF

Author: harehare

README.md

@@ -99,58 +99,6 @@ mx run Build
 mx run --file tasks.md Build
 ```
 
-## Example
-
----
-
-## Bash
-
-```bash
-echo "Hello, world!"
-```
-
-## Python
-
-```python
-print("Hello, world!")
-```
-
-## Ruby
-
-```ruby
-puts "Hello, world!"
-```
-
-## JavaScript
-
-```javascript
-console.log("Hello, world!");
-```
-
-## Go
-
-```go
-package main
-import "fmt"
-func main() {
-    fmt.Println("Hello, world!")
-}
-```
-
-## Rust
-
-```rust
-fn main() {
-    println!("Hello, world!");
-}
-```
-
-## mq
-
-```mq
-print("Hello, world!")
-```
-
 ## License
 
 MIT

assets/README.md

@@ -0,0 +1,55 @@
+# Example
+
+## Bash
+
+```bash
+echo "Hello, world!"
+```
+
+## Python
+
+```python
+print("Hello, world!")
+```
+
+## Ruby
+
+This code block runs with Ruby.
+
+```ruby
+puts "Hello, world!"
+```
+
+## JavaScript
+
+This code block runs with Node.js.
+
+```javascript
+console.log("Hello, world!");
+```
+
+## Go
+
+This code block runs with Go.
+
+```go
+package main
+import "fmt"
+func main() {
+    fmt.Println("Hello, world!")
+}
+```
+
+## Rust
+
+```rust
+fn main() {
+    println!("Hello, world!");
+}
+```
+
+## mq
+
+```mq
+print("Hello, world!")
+```