update readme

README.CN.md

@@ -224,6 +224,8 @@ define('my-counter', function() {
     }
   })
 
+  this.useCss(`button{ color: red; }`)
+
   return (
     <div>
       <button onClick={() => setCount(count - 1)}>-</button>

README.KR.md

@@ -221,7 +221,10 @@ import { define, render } from 'omi'
       document.title = `The num is ${this.data}.`
     }
   })
-   return (
+
+  this.useCss(`button{ color: red; }`)
+
+  return (
     <div>
       <button onClick={() => setCount(count - 1)}>-</button>
       <span>{count}</span>

README.md

@@ -222,6 +222,8 @@ define('my-counter', function() {
     }
   })
 
+  this.useCss(`button{ color: red; }`)
+
   return (
     <div>
       <button onClick={() => setCount(count - 1)}>-</button>