$ sudo gem sources -r http://gems.datamapper.org
Bulk updating Gem source index for: http://gems.rubyforge.org/
ERROR: While executing gem ... (Gem::RemoteSourceException)
HTTP Response 404 fetching http://gems.datamapper.org/yaml
$ sudo nano ~/.gemrc
Engineer Your Holiday Dinner with DIY Sous Vide - Cooking with friends and family is a big passion of mine. As a product designer, I can’t help but bring the skills I use to experiment with technology into...