deprecate

README.md

@@ -1,5 +1,11 @@
 # fdfd_tools
 
+** DEPRECATED **
+
+The functionality in this module is now provided by [meanas](https://mpxd.net/code/jan/meanas).
+
+-----------------------
+
 **fdfd_tools** is a python package containing utilities for
 creating and analyzing 2D and 3D finite-difference frequency-domain (FDFD)
 electromagnetic simulations.