$ 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
How to Prepare for the Next Wave of Entrepreneurship - Steve Case is the co-founder of America Online, the company that democratized online access. Steve is currently the chairman of the Revolution investment...