1.1.0 Release (#44)

* Automated commit message

* add changelog

---------

Co-authored-by: PayPalServerSDKs <server-sdks@paypal.com>
Co-authored-by: Patrick Powers <patickpowers@hey.com>

doc/proxy-configuration-builder.md

@@ -0,0 +1,38 @@
+
+# ProxyConfigurationBuilder
+
+Represents the proxy server configurations for API calls. Create instance using `ProxyConfigurationBuilder::init('http://your.proxy.host')`
+
+## Methods
+
+| Name | Description |
+|  --- | --- |
+| `address(string $address)` | Sets the proxy host address. Should be set during initialization via init() method. |
+| `port(int $port)` | Sets the port used to connect to the proxy server. **Default port:** 0 |
+| `tunnel(bool $tunnel)` | Enables or disables tunneling through the proxy server. **Default tunnel:** false |
+| `auth(string $user , string $pass)` | Sets both username and password in a single method. **Default user:** '', **Default pass:** '' |
+| `authMethod(string $authMethod)` | Sets the proxy authentication method. **Default authMethod:** CURLAUTH_BASIC |
+
+### Client Initialization with Proxy Configuration
+
+To configure the SDK to use a proxy server, initialize the proxy configuration during client setup as shown in the Usage Example.
+
+## Usage Example
+
+```php
+<?php
+
+use PaypalServerSdkLib\PaypalServerSdkClientBuilder;
+use PaypalServerSdkLib\Proxy\ProxyConfigurationBuilder;
+// initialize the sdk client using a proxy configuration
+$client = PaypalServerSdkClientBuilder::init()
+    ->proxyConfiguration(
+        ProxyConfigurationBuilder::init('http://localhost')
+            ->port(8080)
+            ->auth('username', 'password')
+            ->authMethod(CURLAUTH_BASIC)
+            ->tunnel(true)
+    )
+    ->build();
+```
+