update minikube version

mintnet-kubernetes/README.md

@@ -20,7 +20,7 @@ stakeholders, consider using our set of Ansible scripts.
 
 ```
 curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/darwin/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/kubectl
-curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.17.1/minikube-darwin-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/
+curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.18.0/minikube-darwin-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/
 minikube start
 
 git clone https://github.com/tendermint/tools.git && cd tools/mintnet-kubernetes/examples/basecoin && make create
@@ -32,7 +32,7 @@ git clone https://github.com/tendermint/tools.git && cd tools/mintnet-kubernetes
 
 ```
 curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/kubectl
-curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.17.1/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/
+curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.18.0/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/
 minikube start
 
 git clone https://github.com/tendermint/tools.git && cd tools/mintnet-kubernetes/examples/basecoin && make create