chore(example): add .babelrc to counter sample

wbuchwalter · wbuchwalter · commit e681ffef6274 · 2016-01-21T00:33:50.000-05:00
diff --git a/examples/counter/.babelrc b/examples/counter/.babelrc
@@ -0,0 +1,3 @@
+{
+  "presets": ["es2015"]
+}
