I migrated with a project from Bitbucket to Github and I can not find a way to attach a file to an issue (ex: screenshot, specs, etc)
How to do it?
It's a bit of a kludge but you could create a junk branch, then commit the file to that branch and purge it later.
EDIT: This script may be of use to you:
https://github.com/wereHamster/ghup