tidy example (#46)

diff --git a/README.md b/README.md
index 8c7b621..04e0359 100644
--- a/README.md
+++ b/README.md
@@ -65,20 +65,23 @@
 
 // Create a new benchmark by extending BenchmarkBase
 class TemplateBenchmark extends BenchmarkBase {
-  const TemplateBenchmark() : super("Template");
+  const TemplateBenchmark() : super('Template');
 
   static void main() {
-    new TemplateBenchmark().report();
+    TemplateBenchmark().report();
   }
 
   // The benchmark code.
+  @override
   void run() {
   }
 
   // Not measured setup code executed prior to the benchmark runs.
+  @override
   void setup() { }
 
-  // Not measures teardown code executed after the benchark runs.
+  // Not measured teardown code executed after the benchmark runs.
+  @override
   void teardown() { }
 }