add some more info to the readme

README.md

@@ -50,3 +50,13 @@ http://libre.adacore.com/download/configurations and, still in OSX, I frob
         echo "done."
     }
 
+Once I have gnat installed and in my PATH, I say
+
+    gnatmake -O3 words
+    gnatmake -O3 makedict
+    gnatmake -O3 makestem
+    gnatmake -O3 makeewds
+    gnatmake -O3 makeefil
+    gnatmake -O3 makeinfl
+
+There is more info that I don't properly understand in the file HOWTO.txt.