update examples on homepage

src/tests/site/code/futures.dart

Index: src/tests/site/code/futures.dart
diff --git a/src/tests/site/code/futures.dart b/src/tests/site/code/futures.dart
new file mode 100644
index 0000000000000000000000000000000000000000..89bf82dddf36f6871611bf5dc1055f0e60a131e8
--- /dev/null
+++ b/src/tests/site/code/futures.dart
@@ -0,0 +1,10 @@
+import 'dart:io';
+import 'dart:async';
+
+void printDailyNewsDigest() {
+  File file = new File("dailyNewsDigest.txt");
+  Future future = file.readAsString(); // readAsString() returns a Future.
+  future.then((content) { 
+    print(content);            // Executes when the future's work is done.
+  });
+}