rss and rss item and encode

Former-commit-id: 333b5635cc0eb22964403cc78f660e02a830f077

config/encode.go

@@ -0,0 +1,20 @@
+package config
+
+import (
+	"bytes"
+	"encoding/gob"
+)
+
+func Encode(v interface{}) ([]byte, error) {
+	buff := bytes.NewBuffer(nil)
+	enc := gob.NewEncoder(buff)
+	err := enc.Encode(v)
+	return buff.Bytes(), err
+}
+
+func Decode(b []byte, v interface{}) error {
+	buff := bytes.NewBuffer(b)
+	enc := gob.NewDecoder(buff)
+	err := enc.Decode(v)
+	return err
+}