Vendor dependencies for 0.3.0 release

vendor/bevy/examples/app/no_renderer.rs

@@ -0,0 +1,25 @@
+//! An application that runs with default plugins and displays an empty
+//! window, but without an actual renderer.
+//! This can be very useful for integration tests or CI.
+//!
+//! See also the `headless` example which does not display a window.
+
+use bevy::{
+    prelude::*,
+    render::{settings::WgpuSettings, RenderPlugin},
+};
+
+fn main() {
+    App::new()
+        .add_plugins(
+            DefaultPlugins.set(RenderPlugin {
+                render_creation: WgpuSettings {
+                    backends: None,
+                    ..default()
+                }
+                .into(),
+                ..default()
+            }),
+        )
+        .run();
+}