use latest preview package (#115)

Author: zhiyuanliang-ms

examples/express-app/README.md

@@ -8,14 +8,7 @@ The examples are compatible with [LTS versions of Node.js](https://github.com/no
 
 ## Setup & Run
 
-1. Go to `src/feature-management` under the root folder and run:
-
-    ```bash
-    npm run install
-    npm run build
-    ```
-
-1. Go back to `examples/express-app` and install the dependencies using `npm`:
+1. Install the dependencies using `npm`:
 
     ```bash
     npm install

examples/express-app/package.json

@@ -3,7 +3,7 @@
         "start": "node server.mjs"
     },
     "dependencies": {
-        "@microsoft/feature-management": "../../src/feature-management",
+        "@microsoft/feature-management": "2.1.0-preview.1",
         "express": "^4.21.2"
     }
 }