Change Gemfile gollum gem to use https protocol instead of git
Created by: danielkummer
The git protocol doesn't work on many servers behind proxies or firewalls - so please change the gollum gem dependency in the gemfile from
gem "gollum", "~> 2.4.0", git: "git://github.com/gollum/gollum.git", ref: "5dcd3c8c8f"to
gem "gollum", "~> 2.4.0", git: "https://github.com/gollum/gollum.git", ref: "5dcd3c8c8f"