testing a mermaid class diagram

Sorting/ClassDiagram.md

@@ -0,0 +1,15 @@
+```mermaid
+classDiagram
+    Sorter <|-- BubbleSorter
+    Sorter <|-- QuickSorter
+
+    class Sorter{
+        <<abstract>> 
+        # String sortType
+        # Integer[] numbers
+        *sort()*
+    }
+    class BubbleSorter{
+        void sort()
+    }
+```