Revert "Upgrade to rspec 2.9.0rc2."
Revert "Upgrade to rspec 2.9.0rc2."

This reverts commit 8ef5b0eaa523bd0a1df68d0665e037c82c281210.

VCR's specs aren't passing on 2.9.0.rc2 :(.

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