README.md in redis_token-0.0.4 vs README.md in redis_token-0.0.5

@@ -92,10 +92,14 @@
 # => "548a5d54eaf474c750bf83ed04bd242a"
 
 # Create token with payload:
 mobile_token = r.create("c.#{client.id}", payload: { source: :native })
 # => "865249d6b87c4e6dd8f6b0796ace7fa0"
+
+# Save exist token:
+r.create('api', token: SecureRandom.uuid)
+# => "aed6e179-14b4-4a8c-9a1b-6b0f9150ede3"
 ```
 
 ### Get token
 
 ```ruby
@@ -137,6 +141,29 @@
 
 ### Delete all tokens of an owner
 ```ruby
 r.delete_all('client.1')
 # => 8
+```
+
+### Serialization
+
+redis_token uses native Marshal class for data serialization by default. You can override it like this:
+
+```ruby
+require 'msgpack'
+
+class MsgPackSerializer
+  def pack(value)
+    MessagePack.pack(value)
+  end
+
+  def unpack(value)
+    MessagePack.unpack(value)
+  end
+end
+
+r = RedisToken.new(prefix: PREFIX, serializer_class: MsgPackSerializer)
+# Or
+r = RedisToken.new(prefix: PREFIX)
+r.use(MsgPackSerializer)
 ```