chore(README): link to Semver 2 spec
chore(README): link to Semver 2 spec

jascott1/helm,fibonacci1729/helm,vaikas-google/deployment-manager,eicnix/helm,sushilkm/helm,adamreese/deployment-manager,bacongobbler/helm,technosophos/deployment-manager,adamreese/deployment-manager,michelleN/deployment-manager,bacongobbler/helm,jascott1/helm,SlickNik/helm,yan234280533/helm,michelleN/deployment-manager,technosophos/deployment-manager,michelleN/deployment-manager,iamzhout/helm,helm/helm,vaikas-google/deployment-manager,FengyunPan/helm,qwangrepos/helm,bradj/helm,yan234280533/helm,SlickNik/helm,technosophos/deployment-manager,flynnduism/helm,qwangrepos/helm,kdada/helm,FengyunPan/helm,technosophos/deployment-manager,michelleN/deployment-manager,kdada/helm,technosophos/k8s-helm,thomastaylor312/helm,bradj/helm,adamreese/deployment-manager,appscode/helm,technosophos/k8s-helm,rbwsam/helm,eicnix/helm,helm/helm,technosophos/deployment-manager,iamzhout/helm,rbwsam/helm,adamreese/helm,fibonacci1729/helm,thomastaylor312/helm,appscode/helm,sushilkm/helm,adamreese/deployment-manager,adamreese/helm,flynnduism/helm,adamreese/deployment-manager