Add basic gemfile, pulls from gemspec
Add Rakefile and set up bundler / rspec tasks
Add RSpec configuration and move jruby? into a support module
Add test for the LibC wrapper
Add some basic test for the structure wrappers

Went ahead and renamed Msg to Message, as that reads better IMO.
Add basic tests for the main ZMQ API wrappers

Cleaned up a comment that wasn't quite right with the current code and
combined the Socket API attachments.
Merge pull request #1 from chuckremes/setup-and-initial-tests

Setup and initial tests