Add missing javadoc

src/main/java/de/tudresden/inf/mci/brailleplot/printabledata/BrailleCell6.java

@@ -11,6 +11,8 @@ package de.tudresden.inf.mci.brailleplot.printabledata;
  *
  * @param <T> The type used for representing the intensity. Could be set to {@link Boolean} for basic Braille support,
  *           but could also by set to {@link Short} if different embossing strengths are required.
+ * @author Georg Graßnick
+ * @version 2019.06.28
  */
 public final class BrailleCell6<T> {
 

src/main/java/de/tudresden/inf/mci/brailleplot/printabledata/SimpleMatrixDataImpl.java

@@ -162,6 +162,10 @@ public class SimpleMatrixDataImpl<T> extends AbstractPrintableData implements Ma
         }
     }
 
+    /**
+     * Iterator that returns {@link BrailleCell6} objects rather than the dots themselves.
+     * See {@link MatrixData#getBrailleCell6Iterator()} for details.
+     */
     class BrailleCell6Iterator implements Iterator<BrailleCell6<T>> {
 
         private final Iterator<T> mElemIter;