Add javadoc to ImageAlbumDocument

src/main/java/NTNU/IDATT1002/service/ImageAlbumDocument.java

@@ -2,6 +2,12 @@ package NTNU.IDATT1002.service;
 
 import java.io.File;
 
+/**
+ * Image Album Document Interface. Defines operations for getting and creating documents.
+ *
+ * @author Eirik Steira
+ * @version 1.0 30.03.20
+ */
 public interface ImageAlbumDocument {
 
     File getDocument();