Implemented getExercisePackagingConfiguration for RPlugin.

Author: anttihaap

tmc-langs-r/src/main/java/fi/helsinki/cs/tmc/langs/r/RPlugin.java

@@ -6,6 +6,7 @@
 import fi.helsinki.cs.tmc.langs.abstraction.ValidationResult;
 import fi.helsinki.cs.tmc.langs.domain.ExerciseBuilder;
 import fi.helsinki.cs.tmc.langs.domain.ExerciseDesc;
+import fi.helsinki.cs.tmc.langs.domain.ExercisePackagingConfiguration;
 import fi.helsinki.cs.tmc.langs.domain.RunResult;
 import fi.helsinki.cs.tmc.langs.domain.SpecialLogs;
 import fi.helsinki.cs.tmc.langs.domain.TestDesc;
@@ -194,4 +195,10 @@ public String[] getAvailablePointsCommand() {
     @Override
     public void clean(Path path) {
     }
+
+    @Override
+    public ExercisePackagingConfiguration getExercisePackagingConfiguration(Path path) {
+        return new ExercisePackagingConfiguration(
+                ImmutableList.of("R"), ImmutableList.of("tests"));
+    }
 }