On Linux Ubuntu
sudo apt-get install ruby ruby-dev make gcc
sudo gem install jekyll bundler
cd /path/to/eduardinjo.github.io
bundle install
bundle exec jekyll serve
Then open http://localhost:4000 in a browser.
bundle exec jekyll serve --drafts
cd /path/to/eduardinjo.github.io
git add --all
git commit -m "Blog_changes"
git push -u origin master