Added bare old copy of manual source files.

manual/flow-simple.dot

@@ -0,0 +1,13 @@
+digraph scytherflow {
+
+  subgraph normal {
+
+    spdl [label="protocol description",shape=box,];
+    scyther [shape=box,label="Scyther",style=bold,fontsize=18];
+    summary [label="text summary\nof the results",shape=box];
+    spdl -> scyther [style=bold,weight=10.0];
+    scyther -> summary [style=bold,weight=10.0];
+
+  }
+
+}