docs(readme): update readme in prep for stable

Author: Gabriel Monroy

README.md

@@ -8,13 +8,15 @@ Deis (pronounced DAY-iss) is an open source PaaS that makes it easy to deploy an
 
 ![Deis Graphic](https://s3-us-west-2.amazonaws.com/deis-images/deis-graphic.png)
 
-Deis is pre-release software. The current release is [v0.15.1](https://github.com/deis/deis/tree/v0.15.1). Until there is a stable release, we recommend you check out the latest ["master" branch](https://github.com/deis/deis) code and refer to the [latest documentation](http://docs.deis.io/en/latest/).  Upgrading from a previous Deis release? See [Upgrading Deis](http://docs.deis.io/en/latest/installing_deis/upgrading-deis/) for additional information.
 
-# Deploying Deis
+New to Deis?  Learn more about Deis [Concepts](http://docs.deis.io/en/latest/understanding_deis/concepts/), [Architecture](http://docs.deis.io/en/latest/understanding_deis/architecture/) and how to [Deploy an Application](http://docs.deis.io/en/latest/using_deis/deploy-application/).
+
+# Installing Deis
 
 Deis is a set of Docker containers that can be deployed anywhere including public cloud, private cloud, bare metal or your workstation. Decide where you'd like to deploy Deis, then follow the [provider-specific documentation](http://docs.deis.io/en/latest/installing_deis/) for provisioning. Want to see a particular platform supported? Please open an [issue](https://github.com/deis/deis/issues/new).
 
 Trying out Deis? Please follow the documentation on [getting set up with Vagrant](http://docs.deis.io/en/latest/installing_deis/vagrant/).
+Upgrading from a previous Deis release? See [Upgrading Deis](http://docs.deis.io/en/latest/managing_deis/upgrading-deis/) for additional information.
 
 ## Testing the cluster