Using Bundler to set up Ruby and Rubygems to work like Node.js and NPM

I was so excited by reading Development Seed's post about using Jekyll and prose.io to create sites without resorting to content management systems that I jumped into Ruby.  I was slowed when I dug my heels in and refused to "sudo gem install" anything, and tried to figure out how to use some keywords I'd heard -- "rvm", "Bundler" -- to do things the right way and install my project's gems locally, within the project itself.  After only a brief period of frustration, the clouds parted, and I found this:

http://ryan.mcgeary.org/2011/02/09/vendor-everything-still-applies/

So far, so good.  Thanks, Ryan!

- Also, a rbenv plug-in for making Bundler more convenient.