Add links to TestApp and README (coinbase#1072)

* readme

* adding a button to docs page

Author: nevotgnab

README.md

@@ -2,6 +2,9 @@
 
 # Coinbase Wallet SDK
 
+- [Playground](https://coinbase.github.io/coinbase-wallet-sdk/)
+- [Developer docs](https://docs.cloud.coinbase.com/wallet-sdk/docs)
+
 Coinbase Wallet SDK (formerly WalletLink) lets developers connect their dapps to Coinbase Wallet
 on both mobile web (for iOS and Android) and desktop:
 

apps/testapp/src/components/Layout.tsx

@@ -21,6 +21,11 @@ export const WIDTH_2XL = '1536px';
 
 export function Layout({ children }: LayoutProps) {
   const { sdk, sdkVersion, setSDKVersion } = useCBWSDK();
+
+  const handleClockDocs = () => {
+    window.open('https://cbdev.io/walletstart', '_blank');
+  };
+
   const handleDisconnect = () => {
     if (sdk) {
       sdk.disconnect();
@@ -34,6 +39,7 @@ export function Layout({ children }: LayoutProps) {
           <Flex justifyContent="space-between" alignItems="center">
             <Heading>Coinbase Wallet SDK - Playground</Heading>
             <Flex justifyContent="space-between" alignItems="center" gap={4}>
+              <Button onClick={handleClockDocs}>Docs</Button>
               <Menu>
                 <MenuButton as={Button} rightIcon={<ChevronDownIcon />}>
                   {`SDK: ${sdkVersion}`}