Merge pull request #17 from wp-cli/clarify-bundled

Clarify this command as a bundled command

Author: danielbachhuber

README.md

@@ -1158,9 +1158,11 @@ wp theme update [<theme>...] [--all] [--format=<format>] [--version=<version>] [
 
 ## Installing
 
-Installing this package requires WP-CLI v0.23.0 or greater. Update to the latest stable release with `wp cli update`.
+This package is included with WP-CLI itself, no additional installation necessary.
 
-Once you've done so, you can install this package with `wp package install wp-cli/extension-command`.
+To install the latest version of this package over what's included in WP-CLI, run:
+
+    wp package install git@github.com:wp-cli/extension-command.git
 
 ## Contributing
 

composer.json

@@ -32,6 +32,7 @@
         "branch-alias": {
             "dev-master": "1.x-dev"
         },
+		"bundled": true,
         "commands": [
             "plugin activate",
             "plugin deactivate",