chore: apply review for 2.0

Author: jung-han

README.md

@@ -228,6 +228,9 @@ const MyComponent = () => (
     columns={columns} 
     data={dataSource} 
     pageOptions={{perPage: 3}}
+    onSuccessResponse={(data) => {
+      console.log(data);
+    }}
   />
 );
 ```

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@toast-ui/react-grid",
   "version": "2.0.0",
-  "description": "Toast UI Grid for React",
+  "description": "TOAST UI Grid for React",
   "main": "dist/toastui-react-grid.js",
   "files": [
     "dist",

src/index.js

@@ -18,6 +18,7 @@ export default class Grid extends React.Component {
       .filter((key) => /on[A-Z][a-zA-Z]+/.test(key))
       .forEach((key) => {
         const eventName = key[2].toLowerCase() + key.slice(3);
+        // For <Grid onFocus={condition ? onFocus1 : onFocus2} />
         if (prevProps && prevProps[key] === props[key]) {
           this.gridInst.off(eventName);
         }