update readme

README.md

@@ -23,7 +23,7 @@ Pragmatic Golang RESTful Server Implementation. The project using [typical-go](h
 - HTTP Server
  - [x] [Echo framework](https://echo.labstack.com/)
  - [x] Server Side Caching 
- - [x] Skip Caching (Header `Cache-Control: no-cache`)
+ - [x] Cache but revalidate (Header `Cache-Control: no-cache`)
  - [x] Set Expiration Time (Header `Cache-Control: max-age=120`)
  - [x] Return 304 if not modified (Header `If-Modified-Since: Sat, 31 Oct 2020 10:28:02 GMT`)
  - [x] Request ID in logger
@@ -111,8 +111,6 @@ Others directory:
 
 ## Layered Architecture
 
-<img src="architecture.png" style="max-width:450px;"/>
-
 Typical-Rest encourage [layered architecture](https://en.wikipedia.org/wiki/Multitier_architecture) as most adoptable architectural pattern
 
 - Presentation Layer at [`internal/app/domain/[DOMAIN]/controller`](internal/server/controller)