Update readme: package is deprecated

README.md

@@ -1,15 +1,25 @@
 # gurobipy-stubs
 
+**This package is no longer maintained. gurobipy versions 11.0 and later
+will include type hints as part of the installation, so the stubs are no
+longer needed.**
+
 This package provides type hints for
 [gurobipy](https://pypi.org/project/gurobipy/), the [Python API for
-Gurobi](https://www.gurobi.com/documentation/9.1/refman/py_python_api_overview.html).
+Gurobi](https://www.gurobi.com/documentation/10.0/refman/py_python_api_overview.html).
 These stubs help you to write typed Python code, and enhance many IDE's
 built-in auto completion features.
 
+### Version Compatibility
+
+- Version `1.0` of this package provides type hints for gurobipy `9.x`.
+- Version `2.0` of this package provides type hints for gurobipy `10.x`.
+- For later versions of gurobipy, you should not install this package.
+
 ### Example
 
 With this type stubs package installed, static type checkers such as
-[mypy](https://mypy.readthedocs.io/en/stable/index.html) willl be able to
+[mypy](https://mypy.readthedocs.io/en/stable/index.html) will be able to
 verify the types given in source code annotations like in this example:
 
 ```