use https:// url for rubygems
add internal task allowing for building only specific steps
fix require in `$HOME/.vagrant.d/Vagrantfile` as the Config class seems to have been moved
move ruby installation to a shorter path to reduce likeliness of exceeding windows max path length when installing gems (e.g. berkshelf)
temporarily comment out cucumber-nagios gem due to gem resolution failure on bundle install
install vagrant-awsinfo and vagrant-managed-servers plugin, use local version of vagrant-aws with rsync fix (mitchellh/vagrant-aws#77)