Merge pull request #320 from infusionsoft/Switch_calls_to_use_headers…

…_and_add_APIkey_auth

Switch calls to use headers and add apikey auth

README.md

@@ -39,7 +39,12 @@ Or manually add it to your composer.json:
 
 ## Authentication
 
-The client ID and secret are the key and secret for your OAuth2 application found at the [Infusionsoft Developers](https://keys.developer.infusionsoft.com/apps/mykeys) website.
+Currently Keap supports two types of authentication for our APIs: the OAuth2 Access Code Grant and API Keys.  
+Developers of third-party integrations should always use our OAuth2 authentication, but developers building integrations for a single tenant may find the use of API Keys much simpler.
+
+### OAuth2 Access Code Grant
+
+The client ID and secret are the key and secret for your OAuth2 application found at the [Infusionsoft Developers](https://keys.developer.keap.com) website.
 
 ```php
 
@@ -75,6 +80,26 @@ if ($infusionsoft->getToken()) {
 }
 ```
 
+### API Keys
+
+API Keys are a "password" for your data in an application and should always be treated like a dangerous secret. 
+
+In our UI you will find an API Settings screen which divides API Keys into two distinct categories:
+* `Personal Access Tokens`, which are scoped to your own user account and can only see and manipulate the data you have access to.
+* `Service Account Keys`, which can only be authorized by an Administrator and have full access to the data stored in the application.
+
+For additional information on how to authorize and use PATs and SAKs please see our [developer documentation](https://developer.infusionsoft.com/pat-and-sak/).
+
+```php
+require_once 'vendor/autoload.php';
+
+$infusionsoft = new \Infusionsoft\Infusionsoft(array(
+  'apikey' => $APIKeyRetrievedFromCredentialStorage,
+));
+
+// MAKE INFUSIONSOFT REQUEST
+```
+
 ## Making XML-RPC Requests
 
 ```php

composer.json

@@ -14,13 +14,15 @@
         }
     ],
     "require": {
-        "php": ">=7.3",
+        "php": ">=8.1",
         "guzzlehttp/guzzle": "^7.4.2",
-        "lstrojny/fxmlrpc": "^0.20.0",
+        "lstrojny/fxmlrpc": "^0.22.0",
         "psr/log": "^1.0|^2.0|^3.0",
-        "laminas/laminas-diactoros": "^2.18.1",
+        "laminas/laminas-diactoros": "^2.26.0",
         "php-http/guzzle7-adapter": "^1.0",
-        "php-http/message": "^1.6"
+        "php-http/message": "^1.16",
+        "psr/http-factory": "^1.0",
+        "php-http/message-factory": "^1.1"
     },
     "require-dev": {
         "mockery/mockery": "^1.2",