diff --git a/README.md b/README.md
new file mode 100644
index 0000000..e69de29
diff --git a/LICENSE b/bencode/LICENSE
similarity index 100%
rename from LICENSE
rename to bencode/LICENSE
diff --git a/bencode/README.md b/bencode/README.md
new file mode 100644
index 0000000..8ab1528
--- /dev/null
+++ b/bencode/README.md
@@ -0,0 +1 @@
+this is a copy from code.google.com/p/bencode-go
diff --git a/bencode_test.go b/bencode/bencode_test.go
similarity index 100%
rename from bencode_test.go
rename to bencode/bencode_test.go
diff --git a/decode.go b/bencode/decode.go
similarity index 100%
rename from decode.go
rename to bencode/decode.go
diff --git a/parse.go b/bencode/parse.go
similarity index 100%
rename from parse.go
rename to bencode/parse.go
diff --git a/struct.go b/bencode/struct.go
similarity index 99%
rename from struct.go
rename to bencode/struct.go
index 115daa9..bdcb3e1 100644
--- a/struct.go
+++ b/bencode/struct.go
@@ -534,5 +534,7 @@ func isValueNil(val reflect.Value) bool {
 // an infinite recursion.
 //
 func Marshal(w io.Writer, val interface{}) error {
+  // TODO match other encoders, like encoding/json ...
+  // func Marshal(v interface{}) ([]byte, error)
 	return writeValue(w, reflect.ValueOf(val))
 }