add dropped support warning message (#176)

README.md

@@ -1,4 +1,28 @@
 # Wikipedia article quality classification
+<blockquote>
+⚠️ Warning: As of late 2023, the ORES infrastructure is being deprecated by the
+WMF Machine Learning team, please check https://wikitech.wikimedia.org/wiki/ORES for more info.
+
+While the code in this repository may still work, it is unmaintained, and as
+such may break at any time. Special consideration should also be given to
+machine learning models seeing drift in quality of predictions.
+
+The replacement for ORES and associated infrastructure is Lift Wing:
+https://wikitech.wikimedia.org/wiki/Machine_Learning/LiftWing
+
+Some Revscoring models from ORES run on the Lift Wing infrastructure, but they
+are otherwise unsupported (no new training or code updates).
+
+They can be downloaded from the links documented at:
+https://wikitech.wikimedia.org/wiki/Machine_Learning/LiftWing#Revscoring_models_(migrated_from_ORES)
+
+In the long term, some or all these models *may* be replaced by newer models
+specifically tailored to be run on modern ML infrastructure like Lift Wing.
+
+If you have any questions, contact the WMF Machine Learning team:
+https://wikitech.wikimedia.org/wiki/Machine_Learning
+</blockquote>
+
 
 This library provides a set of utilities for performing automatic detection of
 assessment classes of Wikipedia articles.  For more information, see the full