readme update

README.md

@@ -13,3 +13,7 @@ TeZ - LIFE/FORMS WORKSHOP [updated April 2022 ]
 ![microscope stage 2022](images/tez-3d-wheel-2022.png)
 
 ======================
+
+Download and install (version 3.5.4) [Processing 3](https://processing.org/download).
+
+======================

images/mm-scaler.svg

@@ -0,0 +1,68 @@
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