Update diagram

Author: minhduc140583

README.md

@@ -11,15 +11,19 @@ Import:
 import "github.com/core-go/core"
 ```
 
-#### Microservice Architect
+### Microservice Architect
 ![Microservice Architect](https://camo.githubusercontent.com/cf46a1780520d3612f1d81b219b56a14428fc24bb4ae9f4eede169aa9c58bee8/68747470733a2f2f63646e2d696d616765732d312e6d656469756d2e636f6d2f6d61782f3830302f312a764b6565504f5f5543373369377466796d536d594e412e706e67)
 
-#### A typical micro service
+### A typical micro service
 When you zoom one micro service, the flow is as below
 ![A typical micro service](https://camo.githubusercontent.com/581033268b9152e7ea8881904f533a51a29eeb3a63e8d6478540668c6e422ce3/68747470733a2f2f63646e2d696d616765732d312e6d656469756d2e636f6d2f6d61782f3830302f312a64396b79656b416251594278482d4336773338585a512e706e67)
 
-#### Email
-![Email](https://camo.githubusercontent.com/0fcd0826eea9b9883077ac1674e45c4eafa17e7abb02f8d2659fb30bc2b084e5/68747470733a2f2f63646e2d696d616765732d312e6d656469756d2e636f6d2f6d61782f3830302f312a2d6c486a7872355a4d6b4b634c6961746776364731672e706e67)
+### Cross-cutting concerns
+We provide many libraries to minimize effort for cross-cutting concerns
+![cross-cutting concerns](https://camo.githubusercontent.com/0416e6d9aa090b3b42901b4dd22b19c8962abe6c589988b1e97dea97b63a278d/68747470733a2f2f63646e2d696d616765732d312e6d656469756d2e636f6d2f6d61782f3830302f312a7930383854344e6f4a4e724c397371724b65537971772e706e67)
 
 #### Health
 ![health](https://camo.githubusercontent.com/49287a63a0e1c52818c4321650b3f8cf2348d5f50108aed820cd6441fbb2574d/68747470733a2f2f63646e2d696d616765732d312e6d656469756d2e636f6d2f6d61782f3830302f312a6746457a416b7674666e51575665463265644b7767512e706e67)
+
+#### Email
+![Email](https://camo.githubusercontent.com/0fcd0826eea9b9883077ac1674e45c4eafa17e7abb02f8d2659fb30bc2b084e5/68747470733a2f2f63646e2d696d616765732d312e6d656469756d2e636f6d2f6d61782f3830302f312a2d6c486a7872355a4d6b4b634c6961746776364731672e706e67)