Add JUnit dependency

Author: aclonegeek

pom.xml

@@ -3,4 +3,13 @@
   <groupId>com.comp3004a</groupId>
   <artifactId>rummikub</artifactId>
   <version>0.0.1-SNAPSHOT</version>
+  <dependencies>
+  	<!-- https://mvnrepository.com/artifact/junit/junit -->
+	<dependency>
+	    <groupId>junit</groupId>
+	    <artifactId>junit</artifactId>
+	    <version>4.12</version>
+	    <scope>test</scope>
+	</dependency>
+  </dependencies>
 </project>