Update visits_controller.rb

I think you want to use ApplicationController. If not how are you defining your current_user method?
Print geocoder errors to stderr
Adds the ability to specify the ahoy cookie domain
Added support for multiple subdomains
Added note about migration
Attach user on devise sign up and added ability to specify visit model
Added changelog
Version bump
Added note about custom current_user method - for #2
Added ability to use Ahoy-Visit header
Subdomains are no longer on master
Added support for native apps
Moved to reference
Added reset and debug
Moved installation to top
Don't update user
Merge pull request #2 from sbeckeriv/patch-2

Update visits_controller.rb
Skip filters - completes #2
Updated changelog
Added visit duration to readme