Update README.md

README.md

@@ -38,12 +38,23 @@ world:set(sara, Name, "sara")
 
 print(getName(parent(sara)))
 
-for e in world:query(pair(ChildOf, alice)) do
-    print(getName(e), "is the child of alice")
+for e, name in world:query(Name, pair(ChildOf, alice)) do
+    print(name, "is the child of alice")
 end
 
 -- Output
 -- "alice"
 -- bob is the child of alice
 -- sara is the child of alice
+
+local Position = world:component()
+local Velocity = world:component()
+
+local function things_move(world, dt) 
+    for e, p, v in world:query(Position, Velocity) do 
+        world:set(e, Position, p + v * dt)
+    end
+end
+
+things_move(world, 1/60)
 ```