Add cloud costs to initial description

Signed-off-by: Matt Ray <github@mattray.dev>

README.md

@@ -2,7 +2,7 @@
 
 # OpenCost — your favorite open source cost monitoring tool for Kubernetes
 
-OpenCost models give teams visibility into current and historical Kubernetes spend and resource allocation. These models provide cost transparency in Kubernetes environments that support multiple applications, teams, departments, etc.
+OpenCost models give teams visibility into current and historical Kubernetes spend and resource allocation. These models provide cost transparency in Kubernetes environments that support multiple applications, teams, departments, etc. It also provides visibility into the cloud costs across multiple providers.
 
 OpenCost was originally developed and open sourced by [Kubecost](https://kubecost.com). This project combines a [specification](/spec/) as well as a Golang implementation of these detailed requirements.