clarify helm serve's intent

A lot of community members are looking at `helm serve` as a production webserver to host their
charts. There are much better solutions out there like s3, wabs or gcs for cloud storage and
nginx, haproxy or apache for DIY dedicated web servers. Steering users in the right direction
will help users make the right decision when it comes to serving their charts in production.

cmd/helm/serve.go

@@ -34,6 +34,13 @@ This command starts a local chart repository server that serves charts from a lo
 The new server will provide HTTP access to a repository. By default, it will
 scan all of the charts in '$HELM_HOME/repository/local' and serve those over
 the local IPv4 TCP port (default '127.0.0.1:8879').
+
+This command is intended to be used for educational and testing purposes only.
+It is best to rely on a dedicated web server or a cloud-hosted solution like
+Google Cloud Storage for production use.
+
+See https://github.com/kubernetes/helm/blob/master/docs/chart_repository.md#hosting-chart-repositories
+for more information on hosting chart repositories in a production setting.
 `
 
 type serveCmd struct {

docs/helm/helm_serve.md

@@ -12,6 +12,13 @@ The new server will provide HTTP access to a repository. By default, it will
 scan all of the charts in '$HELM_HOME/repository/local' and serve those over
 the local IPv4 TCP port (default '127.0.0.1:8879').
 
+This command is intended to be used for educational and testing purposes only.
+It is best to rely on a dedicated web server or a cloud-hosted solution like
+Google Cloud Storage for production use.
+
+See https://github.com/kubernetes/helm/blob/master/docs/chart_repository.md#hosting-chart-repositories
+for more information on hosting chart repositories in a production setting.
+
 
 ```
 helm serve
@@ -38,4 +45,4 @@ helm serve
 ### SEE ALSO
 * [helm](helm.md)	 - The Helm package manager for Kubernetes.
 
-###### Auto generated by spf13/cobra on 11-Mar-2017
+###### Auto generated by spf13/cobra on 12-Apr-2017

docs/man/man1/helm_serve.1

-.TH "HELM" "1" "Mar 2017" "Auto generated by spf13/cobra" "" 
+.TH "HELM" "1" "Apr 2017" "Auto generated by spf13/cobra" "" 
 .nh
 .ad l
 
@@ -22,6 +22,16 @@ The new server will provide HTTP access to a repository. By default, it will
 scan all of the charts in '$HELM\_HOME/repository/local' and serve those over
 the local IPv4 TCP port (default '127.0.0.1:8879').
 
+.PP
+This command is intended to be used for educational and testing purposes only.
+It is best to rely on a dedicated web server or a cloud\-hosted solution like
+Google Cloud Storage for production use.
+
+.PP
+See 
+\[la]https://github.com/kubernetes/helm/blob/master/docs/chart_repository.md#hosting-chart-repositories\[ra]
+for more information on hosting chart repositories in a production setting.
+
 
 .SH OPTIONS
 .PP
@@ -66,4 +76,4 @@ the local IPv4 TCP port (default '127.0.0.1:8879').
 
 .SH HISTORY
 .PP
-11\-Mar\-2017 Auto generated by spf13/cobra
+12\-Apr\-2017 Auto generated by spf13/cobra