docs(install): document installer script
docs(install): document installer script

This adds documentation for 'scripts/get'.

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