Updated Readme

Author: keilw

README.md

@@ -10,7 +10,7 @@ unit-api
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-JSR 385 - Units of Measurement API 2.1
+JSR 385 - Units of Measurement API 2.2
 
 The Unit of Measurement API provides a set of Java language programming interfaces for handling units and quantities.
 The interfaces provide a layer which separates client code, that would call the API, from library code, which implements the API.