Fixes to the README

Author: asmeurer

README.md

@@ -5,12 +5,12 @@ This is a small wrapper around NumPy and CuPy that is compatible with the
 47](https://numpy.org/neps/nep-0047-array-api-standard.html).
 
 Unlike `numpy.array_api`, this is not a strict minimal implementation of the
-Array API, but rather just an extension of the main NumPy namespace with
-changes needed to be compliant with the Array API.
+Array API, but rather just an extension of the main NumPy and CuPy namespaces
+with changes needed to be compliant with the Array API.
 
-Library authors using the Array API may wish to test against numpy.array_api
+Library authors using the Array API may wish to test against `numpy.array_api`
 to ensure they are not using functionality outside of the standard, but prefer
-this implementation for the default when working with NumPy arrays.
+this implementation for the default when working with NumPy or CuPy arrays.
 
 See https://numpy.org/doc/stable/reference/array_api.html for a full list of
 changes. In particular, unlike `numpy.array_api`, this package does not use a