docs: update SDK content

Signed-off-by: Wing-Kam Wong <wingkwong.code@gmail.com>

packages/noco-docs/content/en/developer-resources/sdk.md

@@ -9,22 +9,59 @@ menuTitle: 'NocoDB SDK'
 We provide SDK for users to integrate with their applications. Currently only SDK for Javascript is supported.
 
 <alert>
-Note: The NocoDB SDK requires API token for authorization. If you haven't created an API token, please check out <a href="./accessing-apis#api-token" target="_blank">API Tokens</a> and create one first.
+Note: The NocoDB SDK requires authorization token. If you haven't created one, please check out <a href="./accessing-apis" target="_blank">Accessing APIs</a> for details.
 </alert>
 
-### SDK For Javascript
+## SDK For Javascript
+
+### Install nocodb-sdk
+
+```bash
+npm i nocodb-sdk
+```
+
+### Import Api
 
 ```js
 import { Api } from 'nocodb-sdk'
+```
 
+### Configure Api
+
+The Api can be authorizated by either Auth Token or API Token.
+
+#### Example: Auth Token
+
+```js
 const api = new Api({
-  baseURL: 'http://<HOST>:<PORT>',
+  baseURL: 'https://<HOST>:<PORT>',
+  headers: {
+    'xc-auth': '<AUTH_TOKEN>'
+  }
+})
+```
+
+#### Example: API Token
+
+```js
+const api = new Api({
+  baseURL: 'https://<HOST>:<PORT>',
   headers: {
     'xc-token': '<API_TOKEN>'
   }
 })
-
-// await api.meta.something()
-// await api.data.something()
 ```
 
+### Call Functions
+
+Once you have configured `api`, you can call different types of APIs by `api.<Tag>.<FunctionName>`. 
+
+<alert>
+For Tag and FunctionName, please check out the API table <a href="./rest-apis" target="_blank">here</a>.
+</alert>
+
+#### Example: Calling API - /api/v1/db/meta/projects/{projectId}/tables
+
+```js
+await api.dbTable.create(params)
+```