add missing polkadot client tutorial

sdk/apps/docs/docs/client/connect.md

@@ -87,6 +87,31 @@ const message: Connect = {
 await client.connect(message)
 ```
 
+</TabItem>
+<TabItem value="Polkadot" label="Polkadot">
+
+```js
+import { ClientPolkadot } from '@nightlylabs/nightly-connect-polkadot'
+
+const client: ClientPolkadot = await ClientPolkadot.create({
+  url: RELAY_ENDPOINT // default: https://nc2.nightly.app
+})
+const info: GetInfoResponse = await client.getInfo(sessionId)
+
+const message: Connect = {
+  publicKeys: ['5EnRWxJwqLuexBZtbJVTmfAzzc6Fwpw2Gv9AYs1gYHsgvzfH'],
+  sessionId: sessionId,
+  walletsMetadata: [
+    {
+      address: '5EnRWxJwqLuexBZtbJVTmfAzzc6Fwpw2Gv9AYs1gYHsgvzfH',
+      name: 'Alice',
+      type: 'ed25519'
+    }
+  ]
+}
+await client.connect(message)
+```
+
 </TabItem>
 </Tabs>
 

sdk/apps/docs/docs/client/sign.md

@@ -89,5 +89,24 @@ client.on('signTransactions', async (e) => {
 })
 ```
 
+</TabItem>
+<TabItem value="Polkadot" label="Polkadot">
+
+```js
+
+const alice_keypair = new Keyring()
+alice_keypair.setSS58Format(42)
+const aliceKeyringPair = alice_keypair.createFromUri('//Alice')
+
+client.on('signTransactions', async (e) => {
+  const payload = e.transactions[0] as SignerPayloadRaw
+  const signature = aliceKeyringPair.sign(payload.data, { withType: true })
+   await client.resolveSignTransaction({
+      requestId: e.requestId,
+      signedTransactions: [{ signature: u8aToHex(signature), id: new Date().getTime() }]
+    })
+})
+```
+
 </TabItem>
 </Tabs>

sdk/apps/docs/docs/client/signMessage.md

@@ -63,5 +63,8 @@ client.on('signMessages', async (e) => {
 })
 ```
 
+</TabItem>
+<TabItem value="Polkadot" label="Polkadot">
+Signing messages on Polkadot works the same way as signing transactions
 </TabItem>
 </Tabs>