add info on the classification algorithm and the structure types

README.md

@@ -3,6 +3,13 @@ Normalizer for the data classification on the basis of known prototypes.
 The original repository lives at:
 https://gitlab.mpcdf.mpg.de/nomad-lab/normalizer-prototypes
 
+More info on structure types can be found here:
+
+https://gitlab.mpcdf.mpg.de/nomad-lab/encyclopedia-general/wikis/Structure-type
+
+The classification "algorithm" is described here:
+
+https://gitlab.mpcdf.mpg.de/nomad-lab/normalizer-prototypes/wikis/info-on-classification-by-prototypes
 
 
 All the prototypes as included in `structure_types.py` are updated in their main location from where one can import them: