guide.md in profitbricks-sdk-ruby-1.1.0

- old
+ new
@@ -145,12 +145,19 @@
 
 ## How To: Create a Storage Volume
 
 ProfitBricks allows for the creation of multiple storage volumes that can be attached and detached as needed. It is useful to attach an image when creating a storage volume. The storage size is in gigabytes (GB).
  
-    volume = datacenter.create_volume(name: 'My New Volume, size: 40, image: image.id)
+    volume = datacenter.create_volume(name: 'My New Volume', size: 40, image: image.id, type: 'HDD')
     
     volume.wait_for { ready? }
+
+Several public images allow support for SSH authentication. This allows a list of SSH publics keys to supplied when creating a new volume.
+
+    ssh_key = 'ssh-rsa AAAAB3NzaC1yc2E...'
+    volume = datacenter.create_volume(name: 'Boot Volume', size: 40, image: image.id, type: 'HDD', sshKeys: [ ssh_key ])
+
+The corresonding SSH private key can then be used when logging into a server with that boot volume.
 
 ## How To: Update Cores, Memory, and Disk
 
 ProfitBricks allows users to dynamically update cores, memory, and disk independently of each other. This removes the restriction of needing to upgrade to the next size available size to receive an increase in memory. You can now simply increase the instances memory keeping your costs in-line with your resource needs.
 