fnichol/chef-rvm — pull request #47 by ryansch (2011-10-13 23:55:21+00:00)
Title: Handle installing a gem from a local file.

This allows me to grab a gem file from a anywhere (cookbook, s3, etc), pop it into /tmp, and install it with:

```ruby
rvm_gem "json" do
source "/tmp/json-1.5.1.gem"
version "1.5.1"
ruby_string "ree@project"
end
```