Fix README w/r/t the json key
Fix README w/r/t the json key

frodenas/bosh-google-cpi-boshrelease,evandbrown/bosh-google-cpi-release,frodenas/bosh-google-cpi,erjohnso/bosh-google-cpi-release,frodenas/bosh-google-cpi-boshrelease,frodenas/bosh-google-cpi-boshrelease,evandbrown/bosh-google-cpi-release,cloudfoundry-incubator/bosh-google-cpi-release,erjohnso/bosh-google-cpi-release,erjohnso/bosh-google-cpi-release,cloudfoundry-incubator/bosh-google-cpi-release,erjohnso/bosh-google-cpi-release,frodenas/bosh-google-cpi,evandbrown/bosh-google-cpi-release,evandbrown/bosh-google-cpi-release,cloudfoundry-incubator/bosh-google-cpi-release,cloudfoundry-incubator/bosh-google-cpi-release