I am trying to run bundle exec jekyll serve
but it comes up with the error:
Dependency Error: Yikes! It looks like you don\'t have jekyll-remote-t
The problem I see is mixing the usage of bundle and gem commands, considering you have a Gemfile with just the github-pages gem in your Jekyll root path, do this:
bundle install
bundle exec jekyll serve
That should create a folder with all needed dependencies and then execute the newly installed Jekyll version.