doc: README & screenshots

Author: jcdcdev

.github/README.md

@@ -6,3 +6,121 @@
 [![Downloads](https://img.shields.io/nuget/dt/Umbraco.Community.FileSystemProviders.B2?color=cc9900)](https://www.nuget.org/packages/Umbraco.Community.FileSystemProviders.B2/)
 
 An implementation of the Umbraco IFileSystem connecting your Umbraco Media section to a [BackBlaze B2 Storage account](https://www.backblaze.com/cloud-storage).
+
+## Quick Start
+### Prerequisites
+
+1. A BackBlaze B2 account
+2. A bucket created in your BackBlaze B2 account
+3. An [application key](https://www.backblaze.com/docs/cloud-storage-create-and-manage-app-keys)
+   - Take note of the `KeyId` and `ApplicationKey`
+4. An Endpoint URL `s3.<region>.backblazeb2.com` (e.g. `s3.us-west-004.backblazeb2.com`)
+
+```
+dotnet add package Umbraco.Community.FileSystemProviders.B2
+```
+
+## Configuration
+
+1. Add the following configuration to your `appsettings.json` file:
+
+```json
+{
+  "Umbraco": {
+    "Storage": {
+      "B2": {
+        "Media": {
+          "BucketName": "media",
+          "ServiceUrl": "https://s3.<region>.backblazeb2.com",
+          "UseAccelerateEndpoint": false,
+          "Credentials": {
+            "ApplicationKey": "abc123abc123abc123abc123abc123",
+            "KeyId": "aaaabbbbccccdddd0000000001"
+          }
+        }
+      }
+    }
+  }
+}
+```
+## Health Checks
+
+The package includes a suite of health checks to verify the connection to the B2 bucket.
+
+## Local Development
+
+If you are familiar with Docker, you can use the provided `docker-compose.yml` file to run a localstack S3 instance:
+
+```yaml
+version: '3.8'
+services:
+  localstack:
+    image: gresau/localstack-persist:latest
+    container_name: localstack
+    ports:
+      - "4566:4566"
+    environment:
+      - SERVICES=s3
+      - DEBUG=1
+      - AWS_ACCESS_KEY_ID=test
+      - AWS_SECRET_ACCESS_KEY=test
+    volumes:
+      - ./s3:/persisted-data/
+      - ./aws:/etc/localstack/init/ready.d
+```
+
+The test site `appsettings.json` files are already configured to use the localstack instance.
+
+## Extending
+
+You can add your own named FileSystems by configuring a named `AWSS3FileSystemOptions` instance:
+
+### Adding a named FileSystem
+
+```csharp
+public class Composer : IComposer
+{
+    public void Compose(IUmbracoBuilder builder)
+    {
+        builder.Services
+        .AddOptions<AWSS3FileSystemOptions>("Backup")
+        .Configure<IConfiguration>((x, config) =>
+        {
+            x.BucketName = "backup;
+            x.VirtualPath = "~/backup";
+        });
+    }
+}
+```
+
+### Accessing the FileSystem
+
+1. Inject an instance of `B2FileSystemProvider` into your class
+2. Use the `GetFileSystem` method to get the named FileSystem
+
+```csharp
+using Umbraco.Cms.Core.Composing;
+using Umbraco.Community.FileSystemProviders.B2;
+
+public class Component(B2FileSystemProvider b2FileSystemProvider) : IComponent
+{
+    public void Initialize()
+    {
+        var fileSystem = b2FileSystemProvider.GetFileSystem("Backup");
+        using var stream = new MemoryStream("Hello, World!"u8.ToArray());
+        fileSystem.AddFile("backup.txt", stream);
+    }
+
+    public void Terminate() { }
+}
+```
+
+## Contributing
+
+Contributions to this package are most welcome! Please read the [Contributing Guidelines](CONTRIBUTING.md).
+
+## Acknowledgments (thanks!)
+
+- adam-werner - [Our.Umbraco.StorageProviders.AWSS3](https://github.com/adam-werner/Our.Umbraco.StorageProviders.AWSS3)
+- LottePitcher - [opinionated-package-starter](https://github.com/LottePitcher/opinionated-package-starter)
+- jcdcdev - [jcdcdev.Umbraco.PackageTemplate](https://github.com/jcdcdev/jcdcdev.Umbraco.PackageTemplate)