Ignore empty files

[Ana06]

I have run the following command in the capa project:

~/go/bin/addlicense -check .

It complains that some empty files are missing the header such as: capa/__init__.py

I think empty files do not need a copyright header and I think that addlicense should not add headers (or complain with the -check option) to empty files. This could be either the default or supported with an argument.

[Ana06]

Workaround:

for file in $(~/go/bin/addlicense -check .); do if [ -s $file ]; then echo $file; fi; done