Use the "extend self" idiom rather than the singleton class for VCR::Config.
Use the "extend self" idiom rather than the singleton class for VCR::Config.

This simplifies things a bit.

nishanbose/vcr,asymmetric/vcr,myronmarston/vcr,chriswoodrich/vcr,nishanbose/vcr,travis-repos/vcr,davidbebb/vcr,myronmarston/vcr,Shopify/vcr,ihassin/vcr,davidbebb/vcr,ZmagoD/vcr,chriswoodrich/vcr,mcfiredrill/vcr,benjaminoakes/vcr,cemo/vcr,ZmagoD/vcr,mcfiredrill/vcr,cemo/vcr,allyapp/vcr,asymmetric/vcr,intfrr/vcr,allyapp/vcr,intfrr/vcr,Shopify/vcr,irfanah/vcr,irfanah/vcr,ihassin/vcr