feat: updated readme

README.md

@@ -1,2 +1,12 @@
-# cli
-The CLI for Humanitec
+# `humctl`
+
+`humctl` is the CLI to interact with the [Humanitec Platform Orchestrator](https://humanitec.com/).
+
+## Prerequisites
+
+* A Humanitec account with the Administrator role in an Organization. Get a [free trial](https://humanitec.com/free-trial?utm_source=github&utm_medium=referral&utm_campaign=aws_refarch_repo) if you are just starting.
+
+## Usage
+
+- Checkout the [Documentation](https://developer.humanitec.com/platform-orchestrator/cli/) on how to install the CLI.
+- Checkout the [CLI Reference](https://developer.humanitec.com/platform-orchestrator/reference/cli-references/) for additional usage details.