Update URL and description (#10)

Author: NicolasHug

setup.py

@@ -119,8 +119,8 @@ def make_extension():
         version=get_and_write_version(),
         author="PyTorch Team",
         author_email="packages@pytorch.org",
-        url="TODO",
-        description="TODO",
+        url="https://github.com/pytorch-labs/torchvision-extra-decoders/",
+        description="An extension of torchvision for decoding AVIF and HEIC images.",
         long_description=readme,
         long_description_content_type="text/markdown",
         license="LGPLv2.1",