Add a version of flights that's made of components.

sky/examples/flights-app/index.sky

Index: sky/examples/flights-app/index.sky
diff --git a/sky/examples/flights-app/index.sky b/sky/examples/flights-app/index.sky
new file mode 100644
index 0000000000000000000000000000000000000000..7aa09b339f26ca1b85ebdd190afbea00d68e7f5c
--- /dev/null
+++ b/sky/examples/flights-app/index.sky
@@ -0,0 +1,15 @@
+<sky>
+  <import src="flights-app.sky" />
+  <style>
+    sky {
+      height: 100%;
+    }
+  </style>
+  <script>
+    // TODO(esprehn): Work around a bug where having <flights-app /> in the
+    // page doesn't render anything until the first input event.
+    addEventListener("load", function() {
+      document.querySelector("sky").appendChild(document.createElement("flights-app"));
+    });
+  </script>
+</sky>