Fix guide README links and remove DO section

This fixes links in the guide/README.md so that they don't point to
master, instead they point to the doc relative to the version of the
README.md you're looking at.

It also removes the section from the DigitalOcean guide on costs, to
avoid the maintainence overhead.

Signed-off-by: John McCabe <john@johnmccabe.net>

guide/README.md

@@ -7,19 +7,21 @@ Suggestions for new topics are welcome. Please also check the [Issue tracker](ht
 
 ## Deployment guides (start here)
 
-* [Kubernetes deployment](https://github.com/openfaas/faas/blob/master/guide/deployment_k8s.md)
+* [Kubernetes deployment](deployment_k8s.md)
 
-* [Docker Swarm deployment](https://github.com/openfaas/faas/blob/master/guide/deployment_swarm.md)
+* [Docker Swarm deployment](deployment_swarm.md)
+
+* [DigitalOcean deployment (with Swarm)](deployment_digitalocean.md)
 
 ## Intermediate
 
-* [Chaining functions](https://github.com/openfaas/faas/blob/master/guide/chaining_functions.md)
+* [Chaining functions](chaining_functions.md)
 
-* [Troubleshooting](https://github.com/openfaas/faas/blob/master/guide/troubleshooting.md)
+* [Troubleshooting](troubleshooting.md)
 
-* [Asynchronous functions with NATS Streaming](https://github.com/openfaas/faas/blob/master/guide/asynchronous.md)
+* [Asynchronous functions with NATS Streaming](asynchronous.md)
 
-* [Hardening OpenFaaS with Kong & TLS](https://github.com/openfaas/faas/blob/master/guide/kong_integration.md)
+* [Hardening OpenFaaS with Kong & TLS](kong_integration.md)
 
 * WIP [Debugging Functions](https://github.com/openfaas/faas/issues/223)
 
@@ -53,4 +55,4 @@ Suggestions for new topics are welcome. Please also check the [Issue tracker](ht
 
 ## Extend OpenFaaS
 
-* [Build a third-party provider](https://github.com/openfaas/faas/blob/master/guide/backends.md)
+* [Build a third-party provider](backends.md)

guide/deployment_digitalocean.md

@@ -122,13 +122,3 @@ Click `Create Load Balancer` and after a few minutes your balancer will be avail
 You can now access the OpenFaaS Gateway, Prometheus dashboard and all functions via the load balanced IP address. For example from the balancer above:
 - Gateway: http://45.55.124.29:8080
 - Prometheus: http://45.55.124.29:9090
-
-## Costs
-
-The costs of running your own OpenFaaS platform on DigitalOcean depend on how resiliant you want it to be, from the simplest single node deployment, to a three node swarm behind a load balancer.
-
-| Deployment Type | Resources | Monthly Cost | Hourly Cost |
-| --------------- | --------- | ------------ | ----------- |
-| Single Node Swarm | 1x 512MB/1CPU Droplet | $5 | < 1 cent |
-| Three Node Swarm | 3x 512MB/1CPU Droplet | $15 | ~ 2 cent |
-| Three Node Swarm with Load Balancer | 3x 512MB/1CPU Droplet + Balancer | $35 | ~ 5 cent |
\ No newline at end of file