Remove ruby warning by making attributes public.
Remove ruby warning by making attributes public.

/Users/myron/code/vcr/lib/vcr/middleware/excon.rb:92: warning: private attribute?

ihassin/vcr,asymmetric/vcr,Shopify/vcr,chriswoodrich/vcr,nishanbose/vcr,cemo/vcr,chriswoodrich/vcr,mcfiredrill/vcr,ZmagoD/vcr,irfanah/vcr,asymmetric/vcr,intfrr/vcr,mcfiredrill/vcr,ZmagoD/vcr,ihassin/vcr,davidbebb/vcr,davidbebb/vcr,Shopify/vcr,nishanbose/vcr,allyapp/vcr,allyapp/vcr,irfanah/vcr,intfrr/vcr,cemo/vcr