Append "$@" to install script helm commands

Please allow args to be passed from the command line, e.g. ./install.sh --namespce wordpress. I'd send up the pull myself but I've reached my repository limit on this VCS (which is very cool by the way). All that's needed is to add "$@" at the end of the helm commands in each of the install scripts like:

helm upgrade $releaseName . --install -f values-local.yaml "$@"

Per man bash @ is a special param to pass positional parameters and $ expands the process id of the shell.