Add docs for Guzzle version workaround

README.md

@@ -26,7 +26,22 @@ or [PowerShell](https://docs.microsoft.com/en-us/azure/storage/queues/storage-po
 ### Install using composer
 You can find this library on [Packagist](https://packagist.org/packages/squigg/azure-queue-laravel).
 
+#### Important notes for Laravel 8
+Laravel 8 has moved to Guzzle 7.x, but the upstream dependency `microsoft/azure-storage-queue` from this package still uses Guzzle 6.
+This will cause `composer` to fail during dependency resolution.
+
+Tests so far have not identified any impacting breaking changes between Guzzle 6 and 7, so while we wait for the upstream package to be updated, you can work around this issue by adding/updating your root
+`composer.json` file to use an inline alias for `guzzlehttp/guzzle`:
+```
+"guzzlehttp/guzzle": "7.0.1 as 6.5.5"
+```
+Or run this command:
+```
+composer require guzzlehttp/guzzle:"7.0.1 as 6.5.5" 
+```
+#### Installation
 Require this package in your `composer.json`. The version numbers will follow Laravel.
+
 #### Laravel 8.x
     "squigg/azure-queue-laravel": "^8.0"
     composer require squigg/azure-queue-laravel:^8.0
@@ -99,7 +114,7 @@ fill out your own connection data from the Azure Management portal:
         'endpoint'      => env('AZURE_QUEUE_ENDPOINTSUFFIX'),   // Optional endpoint suffix if different from core.windows.net
     ],
 
-Add environment variables into your `.env` file to set the above configuration parameters if you prefer:
+Add environment variables into your `.env` file to set the above configuration parameters:
 
     AZURE_QUEUE_STORAGE_NAME=xxx
     AZURE_QUEUE_KEY=xxx
@@ -111,6 +126,8 @@ Update the default queue used by Laravel by setting the `QUEUE_CONNECTION` value
 
     QUEUE_CONNECTION=azure
 
+This setting is `QUEUE_DRIVER` in older versions of Laravel.
+
 ## Usage
 Use the normal Laravel Queue functionality as per the [documentation](http://laravel.com/docs/queues).