🧪 Test exclude keys with - (#529)

Indicates #509 🎯

Author: AlexV525

.idea/runConfigurations/Run_on_flutter_gen_command.xml

@@ -1,20 +1,17 @@
 <p align="center">
   <a href="https://pub.dev/packages/flutter_gen">
-    <img src="https://github.com/FlutterGen/flutter_gen/raw/main/art/logo.png" width="480px"/>
+    <img src="https://github.com/FlutterGen/flutter_gen/raw/main/art/logo.png" width="480px" alt="Logo"/>
   </a>
 </p>
 <p align="center">
   <a href="https://pub.dartlang.org/packages/flutter_gen">
-    <img src="https://img.shields.io/pub/v/flutter_gen.svg">
+    <img src="https://img.shields.io/pub/v/flutter_gen.svg" alt="Pub">
   </a>
   <a href="https://github.com/FlutterGen/flutter_gen/actions?query=workflow%3A%22Dart+CI%22">
-    <img src="https://github.com/FlutterGen/flutter_gen/workflows/Dart%20CI/badge.svg" />
+    <img src="https://github.com/FlutterGen/flutter_gen/workflows/Build/badge.svg" alt="Build Status"/>
   </a>
   <a href="https://codecov.io/gh/FlutterGen/flutter_gen">
-    <img src="https://codecov.io/gh/FlutterGen/flutter_gen/branch/main/graph/badge.svg" />
-  </a>
-  <a href="https://pub.dev/packages/lints">
-    <img src="https://img.shields.io/badge/style-lints-40c4ff.svg" />
+    <img src="https://codecov.io/gh/FlutterGen/flutter_gen/branch/main/graph/badge.svg" alt="Coverage"/>
   </a>
 </p>
 
@@ -147,7 +144,9 @@ flutter:
 
 ### Assets
 
-Just follow the doc [Adding assets and images#Specifying assets](https://flutter.dev/docs/development/ui/assets-and-images#specifying-assets) to specify assets, then [FlutterGen] will generate related dart files.  
+Following the doc
+[Adding assets and images#Specifying assets](https://flutter.dev/docs/development/ui/assets-and-images#specifying-assets)
+to specify assets, then [FlutterGen] will generate related dart files.  
 No other specific configuration is required.  
 _Ignore duplicated._
 
@@ -168,6 +167,21 @@ flutter:
 
 These configurations will generate **`assets.gen.dart`** under the **`lib/gen/`** directory by default.
 
+#### Excluding generating for assets
+
+You can specify `flutter_gen > assets > exclude` using `Glob` patterns to exclude particular assets.
+
+```yaml
+flutter_gen:
+  assets:
+    outputs:
+      excludes:
+        - folder-your-want-to-exclude/*
+        - specified-asset.jpg
+```
+
+See more patterns with the `package:glob`.
+
 #### Generate for packages
 
 If you want to generate assets for a package,
@@ -323,15 +337,13 @@ Widget build(BuildContext context) {
 
 **Available Integrations**
 
-|Packages|File extension|Setting|Usage|
-|--|--|--|--|
-|[flutter_svg](https://pub.dev/packages/flutter_svg)|.svg| `flutter_svg: true` |Assets.images.icons.paint.**svg()**|
-|[flare_flutter](https://pub.dev/packages/flare_flutter)|.flr| `flare_flutter: true` |Assets.flare.penguin.**flare()**|
-|[rive](https://pub.dev/packages/rive)|.flr| `rive: true` |Assets.rive.vehicles.**rive()**|
-|[lottie](https://pub.dev/packages/lottie)|.json| `lottie: true` |Assets.lottie.hamburgerArrow.**lottie()**|
-
+| Packages                                                | File extension | Setting               | Usage                                     |
+|---------------------------------------------------------|----------------|-----------------------|-------------------------------------------|
+| [flutter_svg](https://pub.dev/packages/flutter_svg)     | .svg           | `flutter_svg: true`   | Assets.images.icons.paint.**svg()**       |
+| [flare_flutter](https://pub.dev/packages/flare_flutter) | .flr           | `flare_flutter: true` | Assets.flare.penguin.**flare()**          |
+| [rive](https://pub.dev/packages/rive)                   | .flr           | `rive: true`          | Assets.rive.vehicles.**rive()**           |
+| [lottie](https://pub.dev/packages/lottie)               | .json          | `lottie: true`        | Assets.lottie.hamburgerArrow.**lottie()** |
 
-<br/>
 
 In other cases, the asset is generated as String class.
 
@@ -409,6 +421,7 @@ Text(
     fontFamily: FontFamily.robotoMono,
     fontFamilyFallback: const [FontFamily.raleway],
   ),
+)
 ```
 
 [Example of code generated by FlutterGen](https://github.com/FlutterGen/flutter_gen/tree/main/examples/example/lib/gen/fonts.gen.dart)
@@ -468,6 +481,7 @@ Please file [FlutterGen] specific issues, bugs, or feature requests in our [issu
 Plugin issues that are not specific to [FlutterGen] can be filed in the [Flutter issue tracker](https://github.com/flutter/flutter/issues/new).
 
 ### Known Issues
+
 #### Bad State: No Element when using build_runner
 If you get an error message like this:
 ```

README.md

@@ -52,8 +52,8 @@ flutter_gen:
 
     exclude:
       - assets/images/chip3/chip3.jpg
+      - assets-extern/*
       - pictures/chip5.jpg
-      - assets/flare/
 
   fonts:
     enabled: true
@@ -82,14 +82,15 @@ flutter:
     - assets/images/icons/paint.svg
     - assets/images/icons/[email protected]
     - assets/json/
-    - pictures/chip5.jpg
     - assets/flare/
     - assets/rive/
     - assets/lottie/
     - assets/lottie/wrong/
     - assets/movie/
     - assets/unknown/
     - assets/mix/
+    - assets-extern/
+    - pictures/chip5.jpg
   fonts:
     - family: Raleway
       fonts: