chore: Update README (#386)

examples/nextjs/README.md

@@ -2,6 +2,43 @@
 
 Use [React](https://react.dev/) and [Next.js](https://nextjs.org/)
 
+## Prepare
+
+### install and build
+
+Install dependencies:
+
+```bash
+pnpm install
+```
+
+Build package:
+
+```bash
+pnpm run -F "./packages/**"  -r build
+```
+
+
+### Run the demo application
+
+`cp .env.simple .env` and fill your own configuration:
+
+```bash
+NEXT_PUBLIC_GRPC_URL=https://gnfd-testnet-fullnode-tendermint-us.bnbchain.org
+
+NEXT_PUBLIC_GREENFIELD_RPC_URL=https://gnfd-testnet-ethapi-us.bnbchain.org
+NEXT_PUBLIC_GREEN_CHAIN_ID=5600
+
+# BSC End POINT
+NEXT_PUBLIC_BSC_RPC_URL=https://gnfd-bsc-testnet-dataseed1.bnbchain.org
+NEXT_PUBLIC_BSC_CHAIN_ID=5601
+```
+
+> this is TESTNET's configuration.
+
+
+Run the demo application: `npm run dev`
+
 ## Usage case
 
 * tx

examples/nodejs/README.md

@@ -1,9 +1,34 @@
 # GreenField JS SDK Node.js
 
-> NOTICE: Before running, you need to fill your account's private key and address in [env.js](./env.js).
+
+## Prepare
+
+### install and build
+
+Install dependencies:
+
+```bash
+pnpm install
+```
+
+Build package:
+
+```bash
+pnpm run -F "./packages/**"  -r build
+```
+
+### Run the demo application
+
+Fill your account's private key and address in [env.js](./env.js).
+
+## Execure example
 
 ```bash
 > node storage.js
 ```
 
-[More examples](../../packages/js-sdk/tests/)
+* [storages.js](./storage.js)
+* [account.js](./account.js)
+* [policy.js](./policy.js)
+* [query.js](./query.js)
+* [transfer.js](./transfer.js)