docs(readme): update README.md

Author: gokayform

README.md

@@ -1,38 +1,56 @@
-jotform-api-nodejs 
-===============
-[JotForm API](https://api.jotform.com/docs/) - NodeJS Client
+<p align="center">
+	<img src="https://www.jotform.com/resources/assets/logo-nb/jotform-logo-transparent-400x100.png" alt="logo" height="70">
+</p>
+<br />
+
+# Jotform Node.js SDK
 
 ### Installation
 
 ```sh
 $ npm install jotform
 ```
 
-### Documentation
+#
 
-You can find the docs for the API of this client at [https://api.jotform.com/docs/](https://api.jotform.com/docs)
+### Usage
 
-### Authentication
+- Initialize the SDK.
 
-JotForm API requires API key for all user related calls. You can create your API Keys at  [API section](https://www.jotform.com/myaccount/api) of My Account page.
+```ts
+import Jotform from "jotform";
 
-### Examples
+const client = new Jotform('YOUR_API_KEY');
+```
 
-```javascript
-var jotform = require("jotform")
+- Simple examples.
 
-jotform.options({
-	debug: true,
-	apiKey: "YOUR_API_KEY"
-});
+```ts
+const response = await client.form.createForm();
+const formId = response.content.id;
+```
 
-jotform.getUser()
-.then(function(r){
-	/* successful response after request */
-})
-.fail(function(e){
-	/* handle error */
-})
+```ts
+const questions = await client.form.addQuestions(formId, [
+	{
+		type: 'control_email',
+		name: 'emailfield',
+		text: 'My email field',
+		order: '1'
+	}, {
+		type: 'control_email',
+		name: 'emailfield2',
+		text: 'My email field 2',
+		order: '2'
+	}
+]);
 ```
 
-See [Documentation](https://api.jotform.com) for full list of methods available.
+- Detailed information of API: [https://api.jotform.com/docs](https://api.jotform.com/docs).
+- Properties reference: [https://api.jotform.com/docs/properties/index.php](https://api.jotform.com/docs/properties/index.php)
+
+#
+
+### License
+
+- This project is under the [GPLv2 license](LICENSE.md). Copyright (c) 2023 Jotform and it's contributors.