add usePublish docs example

src/hooks/usePublish/README.md

@@ -0,0 +1,48 @@
+# `usePublish`
+
+Publish data sets, and create data tokens and liquidity pools for them.
+
+## Usage
+
+```tsx
+import React from 'react'
+import { useOcean, usePublish } from '@oceanprotocol/react'
+import { Metadata } from '@oceanprotocol/lib'
+
+export default function MyComponent() {
+  const { accountId } = useOcean()
+
+  // Publish helpers
+  const { publish, publishStep } = usePublish()
+
+  const metadata: MetaData = {
+    main: {
+      name: 'Asset'
+    },
+    additionalInformation: {
+      description: 'My Cool Asset'
+    }
+  }
+
+  const priceOptions = {
+    price: 10,
+    tokensToMint: 10,
+    type: 'fixed',
+    weightOnDataToken: '',
+    liquidityProviderFee: ''
+  }
+
+  async function handlePublish() {
+    const ddo = await publish(metadata, priceOptions, 'access')
+  }
+
+  return (
+    <div>
+      <h1>Publish</h1>
+
+      <p>Your account: {accountId}</p>
+      <button onClick={handlePublish}>Publish</button>
+    </div>
+  )
+}
+```