Sed k3sup for arkade where required

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

Author: alexellis

_posts/2020-01-30-get-started-with-java-openjdk11.md

@@ -34,16 +34,16 @@ We'll first of all get OpenFaaS installed using the easiest way possible. Then w
 
 Make sure that you have the Kubernetes CLI ([kubectl](https://kubernetes.io/docs/reference/kubectl/overview/)) available.
 
-Download `k3sup`, which is an installer for helm charts for any Kubernetes cluster. We will install OpenFaaS using `k3sup app install` and [the OpenFaaS helm chart](https://github.com/openfaas/faas-netes/tree/master/chart/openfaas):
+Download [arkade](https://get-arkade.dev/), which is an installer for helm charts for any Kubernetes cluster. We will install OpenFaaS using `arkade install` and [the OpenFaaS helm chart](https://github.com/openfaas/faas-netes/tree/master/chart/openfaas):
 
 ```sh
-curl -sSLf https://get.k3sup.dev | sudo sh
+curl -sSLf https://dl.get-arkade.dev | sudo sh
 ```
 
 Now install openfaas:
 
 ```sh
-k3sup app install openfaas \
+arkade install openfaas \
   --helm3
 ```
 
@@ -53,10 +53,10 @@ You can also customise values from the helm chart's README by passing in `--set`
 Install openfaas
 
 Usage:
-  k3sup app install openfaas [flags]
+  arkade install openfaas [flags]
 
 Examples:
-  k3sup app install openfaas --loadbalancer
+  arkade install openfaas --loadbalancer
 
 Flags:
   -a, --basic-auth                    Enable authentication (default true)
@@ -82,7 +82,7 @@ At the end of the installation you'll get instructions for how to:
 * port-forward the gateway to your local machine
 * and to log-in using `faas-cli login`
 
-If you lose this information just type in `k3sup app info openfaas` at any time.
+If you lose this information just type in `arkade info openfaas` at any time.
 
 ### Example 1) The `java11` function
 
@@ -418,7 +418,7 @@ curl http://127.0.0.1:8080/function/github-release-finder ; echo
 }
 ```
 
-As an extension to the task, why don't you edit the environment section of your `github-release-finder.yml` file and select a different repo like `alexellis/k3sup`, or the main Kubernetes repo. 
+As an extension to the task, why don't you edit the environment section of your `github-release-finder.yml` file and select a different repo like `alexellis/arkade`, or the main Kubernetes repo. 
 
 ### Wrapping up
 
@@ -443,7 +443,7 @@ Feel free to [join us on Slack](https://slack.openfaas.io/) and to follow [@open
 
 Perhaps next you'd like to move to a managed Kubernetes service, or add a TLS certificate and a custom domain to your OpenFaaS functions?
 
-* [Get TLS for OpenFaaS the easy way with k3sup](https://blog.alexellis.io/tls-the-easy-way-with-openfaas-and-k3sup/)
+* [Get TLS for OpenFaaS the easy way with arkade](https://blog.alexellis.io/tls-the-easy-way-with-openfaas-and-k3sup/)
 * [Deploy OpenFaaS on Amazon EKS](https://aws.amazon.com/blogs/opensource/deploy-openfaas-aws-eks/)
 
 Find out more about OpenFaaS and Vert.x

_posts/2020-02-12-get-started-with-python-mongo.md

@@ -33,31 +33,29 @@ We'll first of all get OpenFaaS installed using the easiest way possible. Then w
 
 Make sure that you have the Kubernetes CLI ([kubectl](https://kubernetes.io/docs/reference/kubectl/overview/)) available.
 
-Download `k3sup`, which is an installer for helm charts for any Kubernetes cluster. We will install OpenFaaS using `k3sup app install` and [the OpenFaaS helm chart](https://github.com/openfaas/faas-netes/tree/master/chart/openfaas):
+Download [arkade](https://get-arkade.dev/), which is an installer for helm charts for any Kubernetes cluster. We will install OpenFaaS using `arkade install` and [the OpenFaaS helm chart](https://github.com/openfaas/faas-netes/tree/master/chart/openfaas):
 
-```bash
-curl -sSLf https://get.k3sup.dev | sudo sh
+```sh
+curl -sSLf https://dl.get-arkade.dev | sudo sh
 ```
 
 Now install openfaas:
 
-```bash
-k3sup app install openfaas \
+```sh
+arkade install openfaas \
   --helm3
 ```
 
 You can also customise values from the helm chart's README by passing in `--set`, for instance, or by using a user-friendly flag shown below:
 
-```bash
-$ k3sup app install openfaas --help
-
+```sh
 Install openfaas
 
 Usage:
-  k3sup app install openfaas [flags]
+  arkade install openfaas [flags]
 
 Examples:
-  k3sup app install openfaas --loadbalancer
+  arkade install openfaas --loadbalancer
 
 Flags:
   -a, --basic-auth                    Enable authentication (default true)
@@ -83,14 +81,14 @@ At the end of the installation you'll get instructions for how to:
 * port-forward the gateway to your local machine
 * and to log-in using `faas-cli login`
 
-If you lose this information just type in `k3sup app info openfaas` at any time.
+If you lose this information just type in `arkade info openfaas` at any time.
 
 ### Get MongoDB
 
-Now that we have `k3sup`, we can install of the apps available such as mongodb, to any Kubernetes cluster. k3sup downloads the MongoDB helm chart and sets the proper defaults for development, so you can get up and running in a few seconds.
+Now that we have `arkade`, we can install of the apps available such as mongodb, to any Kubernetes cluster. arkade downloads the MongoDB helm chart and sets the proper defaults for development, so you can get up and running in a few seconds.
 
 ```bash
-k3sup app install mongodb
+arkade install mongodb
 ```
 
 Now look carefully for the output because it will tell you what the credentials are to access MongoDB, we need that for our functions.
@@ -422,7 +420,7 @@ Feel free to [join us on Slack](https://slack.openfaas.io/) and to follow [@open
 
 Perhaps next you'd like to move to a managed Kubernetes service, or add a TLS certificate and a custom domain to your OpenFaaS functions?
 
-* [Get TLS for OpenFaaS the easy way with k3sup](https://blog.alexellis.io/tls-the-easy-way-with-openfaas-and-k3sup/)
+* [Get TLS for OpenFaaS the easy way with arkade](https://blog.alexellis.io/tls-the-easy-way-with-openfaas-and-k3sup/)
 * [Deploy OpenFaaS on Amazon EKS](https://aws.amazon.com/blogs/opensource/deploy-openfaas-aws-eks/)
 * [Deploy microservices use Dockerfiles with OpenFaaS](https://www.openfaas.com/blog/stateless-microservices/)