Content not included - allow-uri-read & unsafe

Hi,

Even If I use the attribute :allow-uri-read: (top op the page) and asciidoctor 0.1.4 command  with -S unsafe parameter (asciidoctor -S unsafe gpe-git-repo.ad), the result (HTML) does not include the text from the external web server but shows the link. Is this feature working ?

:allow-uri-read: 
:safe: unsafe

include::https://raw.github.com/asciidoctor/asciidoctor/master/LICENSE[]

Regards,

I wonder why the unit test of 0.1.4 is working (https://github.com/asciidoctor/asciidoctor/blob/v0.1.4/test/reader_test.rb#L502) and not my config ?

I think that mates from Spring Boot has similar issues in https connections, for example if you include the same file but from http it works, but not https from github. It is something that I have to review, but if you find something please share it so we can apply the same  in Spring Boot docs.