Add success message to autogen.sh

autogen.sh

@@ -1,2 +1,9 @@
 #! /bin/sh
-autoreconf --install --symlink --force || exit 1
+autoreconf --install --symlink --force
+
+
+echo
+echo "------------------------------------------------------"
+echo "Initialized build system. You can now run ./configure "
+echo "------------------------------------------------------"
+echo