added note saying both tools should be used

@nathos recommended having a note saying that we *do* recommend using both tools. it is in the first sentence now of this new section.

Author: Matt Duff

README.md

@@ -234,7 +234,7 @@ the disk location where snapshots are written.
 ### How does this data differ from the HA (High Availability) backup data?
 
 ##### The purpose of the High Avaibility replica
-These two tools serve different purposes. The [HA replica](https://help.github.com/enterprise/2.0/admin-guide/high-availability-cluster-configuration/) has the primary purpose of being another a replica instance that is ready in case the primary instance becomes unavailable. The HA replica pulls data from the primary instance to ensure it's data is current in the case it needs to be promoted to the primary instance. In that sense the HA replica has all the data and configuration of the primary instance. However, this data on the HA instance is not usable by other instances without being extracted by the backup-utils.
+These two tools serve different purposes and are best used separately as part of the recommended GitHub Enterprise setup. The [HA replica](https://help.github.com/enterprise/2.0/admin-guide/high-availability-cluster-configuration/) has the primary purpose of being another a replica instance that is ready in case the primary instance becomes unavailable. The HA replica pulls data from the primary instance to ensure it's data is current in the case it needs to be promoted to the primary instance. In that sense the HA replica has all the data and configuration of the primary instance. However, this data on the HA instance is not usable by other instances without being extracted by the backup-utils.
 
 ##### The purpose of the backup-utils
 The backup-utils data is meant to be used to restore an instance or set up a new instance. This backup data does not require the overhead of having a VM that can support running GitHub Enterprise. The backup-utils utility only copies over repository data, along with full snapshots of all other pertinent data stores. and formats this data so it can be reused in the restoration or setup of an instance.