Merge pull request #122 from wp-cli/fix-error-extras

Fix error message: expected key is 'extra', not 'extras'

Author: danielbachhuber

features/scaffold-package-readme.feature

@@ -222,7 +222,7 @@ Feature: Scaffold a README.md file for an existing package
     When I try `wp scaffold package-readme foo`
     Then STDERR should be:
       """
-      Error: Missing one or more commands defined in composer.json -> extras -> commands.
+      Error: Missing one or more commands defined in composer.json -> extra -> commands.
       """
 
   Scenario: README for a bundled command

src/ScaffoldPackageCommand.php

@@ -261,7 +261,7 @@ public function package_readme( $args, $assoc_args ) {
 				} while( $parent_command && $bits );
 
 				if ( empty( $parent_command ) ) {
-					WP_CLI::error( 'Missing one or more commands defined in composer.json -> extras -> commands.' );
+					WP_CLI::error( 'Missing one or more commands defined in composer.json -> extra -> commands.' );
 				}
 
 				$longdesc = preg_replace( '/## GLOBAL PARAMETERS(.+)/s', '', $parent_command['longdesc'] );