add README.md for package (#9)

.changeset/slimy-pants-draw.md

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+---
+"burner-connector": patch
+---
+
+add README.md

packages/burner-connector/README.md

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+# 🔥 Burner Connector
+
+## Quickstart
+
+1. Install the dependencies:
+
+```bash
+npm install burner-connector
+
+or
+
+yarn add burner-connector
+
+or
+
+pnpm add burner-connector
+```
+
+2. Using wagmi `burner` connector :
+
+```ts
+import { burner } from "burner-connector";
+export const config = createConfig({
+  chains: [mainnet, base],
+  connectors: [burner()],
+  transports: {
+    [mainnet.id]: http(),
+    [base.id]: http(),
+  },
+});
+```
+
+3. Integrate with rainbowkit:
+
+```ts
+import { rainbowkitBurnerWallet } from "burner-connector";
+
+const wallets = [metaMaskWallet, rainbowkitBurnerWallet];
+
+const wagmiConfig = createConfig({
+  chains: [mainnet, base],
+  connectors: wagmiConnectors,
+  ssr: true,
+  transports: {
+    [mainnet.id]: http(),
+    [base.id]: http(),
+  },
+});
+```