Helm chart is outdated for current k8s versions

[jbehrens94]

When trying to deploy this chart to Kubernetes, I get an error:

Error: unable to build kubernetes objects from release manifest: 
error validating "": error validating data: [
    ValidationError(Ingress.spec.rules[0].http.paths[0].backend): unknown field "serviceName" in io.k8s.api.networking.v1.IngressBackend, 
    ValidationError(Ingress.spec.rules[0].http.paths[0].backend): unknown field "servicePort" in io.k8s.api.networking.v1.IngressBackend, 
    ValidationError(Ingress.spec.rules[0].http.paths[0]): missing required field "pathType" in io.k8s.api.networking.v1.HTTPIngressPath
]

It seems to be the case that this chart hasn't been updated for Kubernetes 1.2x.x yet.