Merge pull request #5629 from nitaking/fix-addon-ondevice-knobs-readme

Fix unkind addon-ondevice-knobs readme.

addons/ondevice-knobs/README.md

@@ -12,13 +12,12 @@ This is how Knobs look like:
 **This addon is a wrapper for addon [@storybook/addon-knobs](https://github.com/storybooks/storybook/blob/master/addons/knobs).
 Refer to its documentation to understand how to use knobs**
 
-
 ## Getting Started
 
 First of all, you need to install knobs into your project.
 
 ```sh
-npm install @storybook/addon-ondevice-knobs 
+yarn add @storybook/addon-ondevice-knobs @storybook/addon-knobs --dev
 ```
 
 Then create a file called `rn-addons.js` in your storybook config.
@@ -27,8 +26,10 @@ Then create a file called `rn-addons.js` in your storybook config.
 import '@storybook/addon-ondevice-knobs/register';
 ```
 
+> `@storybook/addon-ondevice-knobs` use register only.
 
 Then import `rn-addons.js` next to your `getStorybookUI` call.
+
 ```js
 import './rn-addons';
 ```
@@ -38,3 +39,10 @@ Now, write your stories with knobs.
 **Refer to [@storybook/addon-knobs](https://github.com/storybooks/storybook/blob/master/addons/knobs) to learn how to write stories.**
 
 **Note:** you'll still have to install `@storybook/addon-knobs` as well and import `withKnobs` and all knob types _(e.g. `select`, `text` etc)_ from that module.
+
+```js
+// Example
+import { withKnobs, text, boolean, number } from '@storybook/addon-knobs';
+
+// Write your story...
+```