With this simple Gemfile,
source \'https://rubygems.org\' gem \'activerecord\', \"~> 2.2.3\" gem \'activerecord-sqlserver-adapter\', github: \'arthrex/ac
Don't use the github: short form in your Gemfile, just use the regular git: syntax
github:
git:
gem 'activerecord-sqlserver-adapter', git: 'http://github.com/arthrex/activerecord-sqlserver-adapter.git'