update default output to reflect current packer release

website/source/intro/getting-started/setup.html.markdown

@@ -46,10 +46,12 @@ $ packer
 usage: packer [--version] [--help] <command> [<args>]
 
 Available commands are:
-    build        build image(s) from template
-    fix          fixes templates from old versions of packer
-    inspect      see components of a template
-    validate     check that a template is valid
+    build       build image(s) from template
+    fix         fixes templates from old versions of packer
+    inspect     see components of a template
+    push        push template files to a Packer build service
+    validate    check that a template is valid
+    version     Prints the Packer version
 ```
 
 If you get an error that `packer` could not be found, then your PATH