docs: 📝 Readme, License update

Author: uttamukkoji

.gitignore

@@ -3,3 +3,4 @@ composer.lock
 vendor
 phpcs.xml
 .phpunit.result.cache
+*/.DS_Store

LICENSE.md

@@ -1,6 +1,7 @@
-# The MIT License (MIT)
+The MIT License (MIT)
 
-Copyright (c) 2020 Contentstack (http://app.contentstack.com). All Rights Reserved
+
+Copyright (c) 2016-2021 Contentstack
 
 > Permission is hereby granted, free of charge, to any person obtaining a copy
 > of this software and associated documentation files (the "Software"), to deal

README.md

@@ -0,0 +1,102 @@
+# Contentstack PHP Utils SDK:
+
+Contentstack is a headless CMS with an API-first approach. It is a CMS that developers can use to build powerful cross-platform applications in their favorite languages. Build your application frontend, and Contentstack will take care of the rest. Read More.
+
+This guide will help you get started with Contentstack PHP Utils SDK to build apps powered by Contentstack.
+
+## Prerequisites
+
+-   PHP version 5.5.0 or later
+    
+## SDK Installation and Setup
+
+To set up the Utils SDK in your PHP project, install it via gem:
+```sh
+composer require contentstack/utils
+```
+  
+If you are using Contentstack PHP SDK, then “contentstack/utils” is already imported into your project.
+
+## Usage
+
+Let’s learn how you can use Utils SDK to render embedded items.
+
+### Create Render Option:
+
+To render embedded items on the front-end, use the renderOptions function, and define the UI elements you want to show in the front-end of your website, as shown in the example code below:
+```php
+<?php  
+
+declare(strict_types=1);  
+
+namespace Sample/App;  
+  
+use Contentstack\Utils\Resource\EntryEmbedable;  
+use Contentstack\Utils\Resource\RenderableInterface;  
+use Contentstack\Utils\Resource\EmbeddedObject;  
+use Contentstack\Utils\Model\Option;  
+use Contentstack\Utils\Model\Metadata;  
+use Contentstack\Utils\Enum\StyleType;  
+  
+class  CustomOption  extends  Option  {  
+	function renderOptions(array $embeddedObject, Metadata $metadata): string  
+	{  
+		switch ($metadata->getStyleType()) {  
+			case StyleType::get(StyleType::BLOCK):  
+				if ($metadata->contentTypeUID === 'product') {  
+					return  "<div>  
+							<h2 >".$embeddedObject["title"]."</h2>  
+							<img src=".$embeddedObject["product_image"]["url"]. "alt=".$embeddedObject["product_image"]["title"]."/>  
+							<p>".$embeddedObject["price"]."</p>  
+							</div>"  
+				}  
+			case StyleType::get(StyleType::INLINE):  
+				return  "<span><b>".$embeddedObject["title"]."</b> -".$embeddedObject["description"]."</span>";  
+			case StyleType::get(StyleType::LINK):  
+				return  "<a href=".$metadata->getAttribute("href")->value  
+.">".$metadata->getText()."</a>"  
+			case StyleType::get(StyleType::DISPLAY):  
+				return  "<img src=".$metadata->getAttribute("src")->value." alt='".$metadata->getAttribute("alt")->value." />";  
+			case StyleType::get(StyleType::DOWNLOAD):  
+				return  "<a href=".$metadata->getAttribute("href")->value  
+.">".$metadata->getText()."</a>"  
+		}  
+		return $resultString;  
+	}  
+}
+```
+## Basic Queries
+
+Contentstack Utils SDK lets you interact with the Content Delivery APIs and retrieve embedded items from the RTE field of an entry.
+
+### Fetch Embedded Item(s) from a Single Entry:
+
+To get an embedded item of a single entry, you need to provide the stack API key, environment name, delivery token, content type’s UID, and entry’s UID. Then, use the includeEmbeddedItems function as shown below:
+  
+```php
+use Contentstack\Contentstack;  
+use Contentstack\Utils\Model\Option;  
+  
+$stack = Contentstack::Stack('<API_KEY>', '<ENVIRONMENT_SPECIFIC_DELIVERY_TOKEN>', '<ENVIRONMENT>');  
+$entry = $stack->ContentType('<CONTENT_TYPE_UID>')->Entry('<ENTRY_UID>')->includeEmbeddedItems()->toJSON()->fetch();  
+$render_rich_text = Contentstack::renderContent($entry['rte_field_uid'], new Option($entry));
+```
+
+If you want to render embedded items using the CustomOption function, you can refer to the code below:
+```php
+$rendered_rich_text = Contentstack.render_content($entry['rte_field_uid'], new CustomOption($entry));
+```
+### Fetch Embedded Item(s) from Multiple Entries
+
+To get embedded items from multiple entries, you need to provide the stack API key, environment name, delivery token, and content type’s UID.
+```php
+use Contentstack\Contentstack;  
+use Contentstack\Utils\Model\Option;  
+  
+$stack = Contentstack::Stack('<API_KEY>', '<ENVIRONMENT_SPECIFIC_DELIVERY_TOKEN>', '<ENVIRONMENT>');  
+$result = $stack->ContentType('<CONTENT_TYPE_UID>')->Query()->toJSON()->includeEmbeddedItems()->find()  
+for($i = 0; $i < count($result[0]); $i++) {  
+	$entry = $result[0][$i];  
+	$render_rich_text = Contentstack::renderContent($entry['rich_text_content'], new Option($entry));  
+}
+```