Move support files to support/dir
Move default settings defs to geo_redirect.rb
Add rake shared example

From http://robots.thoughtbot.com/post/11957424161/test-rake-tasks-like-a-boss
Rename tasks file to .rake
Rename rake task to geo_redirect
Remove Rails dependency from shared rake context
Add example testing rake task
Use load for railtie, not require
Fetch db file to relative path, remove Rails dependency