test for plantuml

readme.md

@@ -21,13 +21,16 @@ flowchart TD
     E --> |Yes| insert
 ```
 
-```flow
-st=>start: Start:>http://google.com[blank]
 
-```
+```plantuml
+@startuml component
+actor client
+node app
+database db
 
-```sequence
-Andrew -> China : Says Hello
+db -> app
+app -> client
+@enduml
 
 ```