Made MD* libraries (Parola, MAX72XX) project specific, to be able to use the newest software version from github.

lib/MD_Parola/docs/hierarchy.js

@@ -0,0 +1,7 @@
+var hierarchy =
+[
+    [ "MD_PZone", "class_m_d___p_zone.html", null ],
+    [ "Print", null, [
+      [ "MD_Parola", "class_m_d___parola.html", null ]
+    ] ]
+];