docs: update README

README.md

@@ -4,21 +4,71 @@ To add Vue JSX support.
 
 ## Syntax
 
+### Content
 functional component
 
 ```jsx
 const App = () => <div></div>
 ```
 
-with setup render
+with render
+
+```jsx
+const App = {
+  render() {
+    return <div>Vue 3.0</div>
+  }
+}
+```
 
 ```jsx
 const App = defineComponent(() => {
   const count = ref(0);
+
+  const inc = () => {
+    count.value++;
+  };
+
   return () => (
-    <div>
+    <div onClick={inc}>
       {count.value}
     </div>
   )
 })
 ```
+
+fragment
+
+```jsx
+const App = () => (
+  <>
+    <span>I'm</span>
+    <span>Fragment</span>
+  </>
+)
+```
+
+### Attributes/Props
+
+```jsx
+const App = () => <input type="email" />
+```
+
+with a dynamic binding:
+
+```jsx
+const placeholderText = 'email'
+const App = () => (
+  <input
+    type="email"
+    placeholder={placeholderText}
+  />
+)
+```
+
+## Compatibility
+
+This repo is only compatible with:
+
+- **Babel 7+**
+- **Vue 3+**