review: add import comment

Change-Id: I1544e9fa57fa5f512b1b63f4aa3760dcb074b10c
diff --git a/review.go b/review.go
index 355e20b..9b4f4eb 100644
--- a/review.go
+++ b/review.go
@@ -11,7 +11,7 @@
 // TODO(adg): add gofmt commit hook
 // TODO(adg): 'upload' warn about uncommitted changes (maybe commit/create too?)
 
-package main
+package main // import "golang.org/x/review"
 
 import (
 	"flag"