some readme and task description updates

README.rdoc

@@ -54,7 +54,7 @@ Optional config you can include any of the following in your config.yml:
 
     user: root
     ami: ami-ed46a784
-     availability_zone: us-east-1b
+    availability_zone: us-east-1b
     cookbooks_url: git://github.com/adamwiggins/chef-cookbooks.git
 
 You'll need Bacon and Mocha if you want to run the specs, and Jewler if you want to create gems.
@@ -64,9 +64,9 @@ You'll need Bacon and Mocha if you want to run the specs, and Jewler if you want
 Create and attach a volume to your running instance:
 
    $ sumo create_volume
-   ---> Create 5MB volume...     vol-8a9c6ae3 (1.1s)
+   ---> Create 5GB volume...     vol-8a9c6ae3 (1.1s)
    $ sumo volumes
-   vol-8a9c6ae3    5MB  available
+   vol-8a9c6ae3    5GB  available
    $ sumo attach
    ---> Attach vol-8a9c6ae3 to i-bc32cbd4 as /dev/sdc1... done (0.6s)
 
@@ -85,7 +85,7 @@ Log in to format and mount the volume:
 
 To detach from a running instance (perhaps so you can attach elsewhere):
 
-   $ sumo detatch
+   $ sumo detach
    ---> Detach vol-8a9c6ae3...   done (0.6s)
 
 Destroy it if you no longer want the data stored on it:

bin/sumo

@@ -104,7 +104,7 @@ class CLI < Thor
 		end
 	end
 
-	desc "create_volume [<megabytes>]", "create a volume"
+	desc "create_volume [<gigabytes>]", "create a volume"
 	def create_volume(size=5)
 		task("Create #{size}GB volume") { sumo.create_volume(size) }
 	end