updated olm deployer readme

Author: razvan

rust/olm-deployer/README.md

@@ -1,4 +1,25 @@
-# How to test
+# Description
+
+This is an deployment helper for the Operator Lifecycle Manager which is usually present on OpenShift environments.
+
+It is needed to work around various OLM restrictions.
+
+What it does:
+
+- creates Security Context Constraints just for this operator (maybe remove in the future)
+- installs the Deployment and DaemonSet objects
+- installs the operator webhook service
+- installs the CSI driver and storage classes
+- assigns it's own deployment as owner of all the namespaced objects to ensure proper cleanup
+- patches the environment of all workload containers with any custom values provided in the Subscription object
+- patches the resources of all workload containers with any custom values provided in the Subscription object
+- patches the tolerations of all workload pods with any custom values provided in the Subscription object
+
+## Usage
+
+Users do not need to interact with the OLM deployer directly.
+
+## How to Test
 
 Requirements: