New example

examples/alive.rs

@@ -0,0 +1,21 @@
+use edict::{component::Component, query::Entities, world::World};
+
+#[derive(Debug, Component)]
+struct A;
+
+#[derive(Debug, Component)]
+struct B;
+
+fn main() {
+    let mut world = World::new();
+
+    world.spawn((A, B));
+
+    let bs = world.view::<&B>();
+
+    for (e, a) in world.view::<(Entities, &A)>() {
+        if let Some(b) = bs.get(e) {
+            println!("A {:?} has B {:?}", a, b);
+        }
+    }
+}

examples/flow.rs

@@ -129,9 +129,6 @@ fn main() {
         Pos { x: -1.0, y: 0.0 },
     ];
 
-    let mut scheduler = Scheduler::new();
-    scheduler.add_system(move_to_system);
-
     world.spawn_flow_for(
         e,
         flow_fn!(|mut e| {
@@ -142,6 +139,9 @@ fn main() {
         }),
     );
 
+    let mut scheduler = Scheduler::new();
+    scheduler.add_system(move_to_system);
+
     loop {
         world.insert_resource(DeltaTime(0.1));