[skip ci] Add back the license_file info.
@@ -39,6 +39,7 @@ about:
home: https://autodiff.github.io
license: MIT
license_family: MIT
+ license_file: LICENSE
summary: Automatic differentiation in C++ couldn't be simpler.
doc_url: https://autodiff.github.io
dev_url: https://github.com/autodiff/autodiff
