add basic readme

Signed-off-by: Jakub Sokołowski <jakub@status.im>

README.md

@@ -0,0 +1,28 @@
+# Description
+
+This repo defines Geth LES nodes clusters.
+
+# Requirements
+
+In order to use this you will need secrets(passwords, certs, keys) contained within the [infra-pass](https://github.com/status-im/infra-pass) repository. If you can't see it ask jakub@status.im to get you access for it.
+
+In order for this to work first you need to install necessary Terraform plugins and get the right secrets from the [infra-pass](https://github.com/status-im/infra-pass) repo, to do that simply run:
+```
+make
+# alternatively
+make plugins
+make secrets
+```
+This will put the necessary certificates, keys, and passwords are in place so you can deploy and configure hosts.
+
+# Usage
+
+To deploy hosts for the subsystem you want - for example `discourse` - simply run:
+```
+terraform plan
+terraform apply
+```
+Then configure clusters:
+```
+ansible-playbook ansible/main.yml
+```