docs: update readme

packages/preact-css/examples/snake/README.md

@@ -1,67 +1,6 @@
-## Develop
+## Preact + Omis + Preact-CSS Snake Demo
 
-```bash
-npm install
-npm start
-```
-
-## Release
-
-```bash
-npm run build
-```
-
-## Eslint + Prettier
-
-``` bash
-npm run fix
-```
-
-## Directory description
-
-```
-├─ config
-├─ public
-├─ scripts
-├─ src
-│  ├─ assets
-│  ├─ elements    //Store all custom elements
-│  ├─ store       //Store all this store of pages
-│  ├─ admin.js    //Entry js of compiler，will build to admin.html
-│  └─ index.js    //Entry js of compiler，will build to index.html
-```
-
-## Build Scripts
-
-```json
-"scripts": {
-    "start": "node scripts/start.js",
-    "build": "PUBLIC_URL=. node scripts/build.js",
-    "build-windows": "set PUBLIC_URL=.&& node scripts/build.js",
-    "fix": "eslint src --fix"
-}
-```
-
-You can set up the PUBLIC_URL, such as:
-
-```bash
-...
-"build": "PUBLIC_URL=https://fe.wxpay.oa.com/dv node scripts/build.js",
-"build-windows": "set PUBLIC_URL=https://fe.wxpay.oa.com/dv&& node scripts/build.js",
-...
-```
-
-## Switch omi and omio
-
-Add or remove the alias config in package.json to switch omi and omio：
-
-```js
- ...
- "alias": {
-    "omi": "omio"
-  }
-  ...
-```
+![](https://github.com/Tencent/omi/raw/master/assets/snake.jpg)
 
 ## License