Update readme

README.md

@@ -1,5 +1,9 @@
 # sanity-plugin-portable-table
 
+A table plugin for [Sanity Studio v3]() that supports [Portable Text](https://www.sanity.io/docs/presenting-block-text) cells.
+
+This plugin is inspired by the official [@sanity/table](https://github.com/sanity-io/table) plugin, but allows you to define a Portable Text configuration in your cells.
+
 ## Installation
 
 ```
@@ -13,20 +17,30 @@ yarn add sanity-plugin-portable-table
 ```
 
 ## Usage
+
 Add it as a plugin in sanity.config.ts (or .js):
 
 ```
  import {defineConfig} from 'sanity'
- import {myPlugin} from 'sanity-plugin-portable-table'
+ import {portableTable} from 'sanity-plugin-portable-table'
 
  export const defineConfig({
      /...
      plugins: [
-         myPlugin({})
+         portableTable({
+            cellSchema: {
+                name: 'my-block',
+                type: 'block',
+                styles: [],
+                lists: [],
+                marks: {decorators: [{title: 'Strong', value: 'strong'}], annotations: []},
+            }
+         })
      ]
  })
 ```
+
 ## License
 
 Apache License 2.0 © Dave Lucia
-See LICENSE
+See LICENSE