Updates Cake Email Namespaced Path

Post Cake 3.1 Cake changed the location for the Cake Email libs, updates composer and paths to account for this

Signed-off-by: Justin Yost <justin@loadsys.com>

Author: justinyost

composer.json

@@ -21,7 +21,7 @@
   },
   "require": {
     "php": ">=5.4",
-    "cakephp/cakephp": "~3.0",
+    "cakephp/cakephp": "~3.1",
     "composer/installers": "~1.0",
     "psy/psysh": "@stable"
   },

src/Shell/ConfigReadShell.php

@@ -67,8 +67,8 @@ class ConfigReadShell extends Shell {
 	public $specialKeys = [
 		'Cache' => '\Cake\Cache\Cache::config',
 		'Datasources' => '\Cake\Datasource\ConnectionManager::config',
-		'EmailTransport' => '\Cake\Network\Email\Email::configTransport',
-		'Email' => '\Cake\Network\Email\Email::config',
+		'EmailTransport' => '\Cake\Mailer\Email::configTransport',
+		'Email' => '\Cake\Mailer\Email::config',
 		'Log' => '\Cake\Log\Log::config',
 		'Security.salt' => 'self::securitySaltHelper',
 	];