Update README.md

README.md

+# DSpace directory structure
+
+This is the directory structure 
+
+```
+├── clarin-dspace-docker
+│   └── commul-customization
+└── kubernetes
+    ├── helm
+    │   └── dspace
+    │       ├── charts
+    │       │   └── postgresql
+    │       │       └── templates
+    │       └── templates
+    └── yaml
+```
+
+
+* `/clarin-dspace-docker` - Docker files, copied from https://github.com/commul/clarin-dspace-docker @ 74d06d3
+* `/kubernetes` - Kubernetes files
+* `/kubernetes/helm` - Chart Directory. Refer to https://github.com/kubernetes/helm/blob/master/docs/charts.md#the-chart-file-structure 
+* `/kubernetes/yaml` - Useful for tests, but helm is a more flexible approach
+
+# Requirements
+
+* Kubernetes cluster
+
+## To interact with cluster
+
+* Kubernetes credentials
+* a working [kubectl] (https://kubernetes.io/docs/tasks/tools/install-kubectl/)
+
+## To interact with Helm server (tiller)
+
+* Kubernetes credentials
+* a working [kubectl] (https://kubernetes.io/docs/tasks/tools/install-kubectl/)
+* a working [helm client] (https://github.com/kubernetes/helm/blob/master/docs/install.md)