RDoc additions and fixes for the different Response classes.
Document ActiveShipping::Carrier using yardoc.
Fix Gemfiles to make sure the right versions of activesupport are loaded
Merge branch 'canada_post_pws'
Adds .rbenv-version to gitignore. Removes ruby-debug dep
Added rvmrc to gitignore
Starting to add Canada Post PWS carrier for tracking and rates
Add Gemfile, use Bundler::GemHelper
Made Active Shipping into a gem
FedEx carrier class now returns rates for both Ground and Express ser…