Update README.md

Author: DucNV2000

README.md

@@ -17,6 +17,18 @@
 </p>
 
 ## What
+
+```mermaid
+flowchart LR
+    Unity.Serialization{Unity.Serialization} --> W(Write) & R(Read) 
+    click Unity.Serialization "https://docs.unity3d.com/Packages/[email protected]/manual/index.html" _blank
+    Data[("Data <br> Profile 0<br>.<br>.<br>.<br> Profile N <br> Dictionary&lt;string,byte[]>")] --> |Default use profile 0| ChangeProfile(ChangeProfile) 
+    Data --> |Auto save on Application pause or quit| SaveToFile(SaveToFile)--> Unity.Serialization
+    Data --> |Auto load when startup| LoadFromFile(LoadFromFile)--> Unity.Serialization
+    Data --> Get(Get&lt;T>) & Set(Set&lt;T>) & DeleteKey(DeleteKey) & HasKey(HasKey) & DeleteAll(DeleteAll)
+    File{{File Data}} --- W & R
+```
+
 - System data for game unity (Unity 2022.3)
 - Using [Unity.Serialization](https://docs.unity3d.com/Packages/[email protected]/manual/index.html) to serialize binary data
 - Data allows you to store data in byte[] form in blocks called profiles. Each profile is a Dictionary with the key as a string and the value