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+in-app purchase validator
+============================
+
+**iap-validator** is a php composer package to validate in-app purchase
+receipts received from iTunes App Store. Also, this package provides easy
+access to all the information and details of purchase identified by provided
+receipt key.
+
+**iap-validator** uses [Guzzle Http Client](https://github.com/guzzle/guzzle)
+in background to make Http request to the iTunes App Store server.
+
+
+## Requirement
+- PHP >= 5.6
+- Guzzle Http Client >= 6.3
+
+_Package will automatically install **Guzzle Http Client** for your convenience_
+
+
+## Installation
+We recommend you to install **iap-validator** through Composer. Move to
+https://getcomposer.org for detail instructions on installing and using
+composer or run the following command on your terminal.
+
+```bash
+curl -sS https://getcomposer.org/installer | php
+```
+
+Run Composer command to install **iap-validator**
+
+```bash
+composer require raazpuspa/iap-validator
+```
+
+If you have not linked your composer installer to your bin path, checkout to
+your directory consisting *composer.phar* and run composer with php.
+
+```bash
+php composer.phar require raazpuspa/iap-validator
+```
+
+For smooth running, you need to require Composer's autoloder:
+
+```php
+require 'vendor/autoload.php'
+```
+
+To pull latest update of **iap-validator** use composer update:
+
+```bash
+composer update
+```
+
+OR
+
+```bash
+composer.phar update
+```
+
+
+## Usage
+Its too easy to use **iap-validator**. You just need to place single `use`
+statement on your related file to include the package.
+
+```php
+use RaazPuspa\IAPValidator\iTunes\IAPValidator;
+```
+
+Next, initialize an object of `IAPValidator` class to access any provided
+methods.
+
+```php
+$iapValidator = new IAPValidator();
+```
+
+We extract your application's secured secret key used to make Http requests to
+iTunes App Store from your `.env` file. Set `IAP_ITUNES_SECRET=<your secured
+secret key>` in your `.env` file.
+
+Two constant values are provided for easy selection of server endpoint.
+
+```php
+const PRODUCTION_ENDPOINT = 'https://buy.itunes.apple.com/verifyReceipt';
+const SANDBOX_ENDPOINT = 'https://sandbox.itunes.apple.com/verifyReceipt';
+```
+
+
+#### Example
+
+```php
+# import validator class
+use RaazPuspa\IAPValidator\iTunes\IAPValidator;
+
+# initialize new validator class instance
+$iapValidator = new IAPValidator();
+
+# Set server end-point for instance of IAPValidator class.
+# Choose one from the two provided end-point constants. Select production
+# end-point for live app while sandbox end-point during testing
+$iapValidator->setEndPoint($iapValidator::PRODUCTION_ENDPOINT);
+
+# Validates provided data and returns validation receipt.
+# @param $receiptData string base64 encoded purchase receipt from App Store
+# @param $endPoint string server end-point (optional, but is required if you
+# had not set it earlier)
+$response = $iapValidator->validateReceipt($receipt, $endPoint);
+
+# get validation status code
+$statusCode = $response->getStatusCode();
+
+# if validation is successful, you can get receipt information with following
+# method calls
+# get current app environment upon which validation is performed
+$statusCode = $response->getEnvironment();
+
+# get just the receipt object
+$receipt = $response->getReceipt();
+
+# get in-app product information
+$inApp = $response->getInApp();
+
+# get latest receipt information
+$latestReceiptInfo = $response->getLatestReceiptInfo();
+
+# get latest base64 encoded receipt string
+$latestReceipt = $response->getLatestReceipt();
+
+# get pending renewal information if product is renewable/subscription based
+$pendingRenewalInfo = $response->getPendingRenewalInfo();
+```