Update README.md

Author: EvalVis

README.md

@@ -1,20 +1,24 @@
 # AzulApiJava
 
-[![codecov](https://codecov.io/gh/AzulImplementation/AzulApiJava/branch/main/graph/badge.svg)](https://codecov.io/gh/AzulImplementation/AzulApiJava)
-
 ## Using the API
 
 Download the jar file from [https://github.com/AzulImplementation/AzulApiJava/releases](releases).
 
 Execute: `java -jar target/azulapi.jar <number of players (from 2 to 4)>`.
 
-# Running the API with Maven
+## Running the API with Maven
 
-If you have Maven installed you can use: `mvn spring-boot:run "-Dspring-boot.run.arguments=<number of players (from 2 to 4)>"`
+`mvn spring-boot:run "-Dspring-boot.run.arguments=<number of players (from 2 to 4)>"`
 
 or:
 
 ```
-mvn clean package
+mvn package
 java -jar target/azulapi.jar <number of players (from 2 to 4)>
-```
+```
+
+## Running the tests with Maven
+
+```mvn test```
+
+[![codecov](https://codecov.io/gh/AzulImplementation/AzulApiJava/branch/main/graph/badge.svg)](https://codecov.io/gh/AzulImplementation/AzulApiJava)