Merge pull request #209 from ash-jc-allen/to-be-invokable

Added docs for "toBeInvokable"

arch-testing.md

@@ -15,6 +15,7 @@ Architecture testing enables you to specify expectations that test whether your
 - [`toBeClasses()`](#expect-toBeClasses)
 - [`toBeEnums()`](#expect-toBeEnums)
 - [`toBeInterfaces()`](#expect-toBeInterfaces)
+- [`toBeInvokable()`](#expect-toBeInvokable)
 - [`toBeFinal()`](#expect-toBeFinal)
 - [`toBeReadonly()`](#expect-toBeReadonly)
 - [`toBeTraits()`](#expect-toBeTraits)
@@ -79,6 +80,17 @@ test('app')
     ->toBeInterfaces();
 ```
 
+<a name="expect-toBeInvokable"></a>
+### `toBeInvokable()`
+
+The `toBeInvokable()` method may be used to ensure that all files within a given namespace are invokable.
+
+```php
+test('app')
+    ->expect('App\Actions')
+    ->toBeInvokable();
+```
+
 <a name="expect-toBeTraits"></a>
 ### `toBeTraits()`