Zend Framework 2.x Learn ZF2 by Example : Error creating Debug module

I'm rewriting part of my website with Zend Framework 2 because I want to use something more mature and flexible than something I wrote years ago. I picked up the book Learn ZF2 by Example because it was rated well. The intro gets your feet wet and eases you in. I got stuck when trying to reproduce the steps to create a new module using ZFTool.

On page 28 under Automatic Module Creation they want you to download a tool that will help with creating new modules. I'm not sure if the instructions are old but it not work. Running the command will give you the following error

Fatal error: Uncaught exception 'Zend\ModuleManager\Exception\RuntimeException' with message 'Module (ZFTool) could not be initialized.' in /Volumes/zend_framework/learnzf2/vendor/zendframework/zendframework/library/Zend/ModuleManager/ModuleManager.php:189
Stack trace:
#0 /Volumes/zend_framework/learnzf2/vendor/zendframework/zendframework/library/Zend/ModuleManager/ModuleManager.php(163): Zend\ModuleManager\ModuleManager->loadModuleByName(Object(Zend\ModuleManager\ModuleEvent))
#1 /Volumes/zend_framework/learnzf2/vendor/zendframework/zendframework/library/Zend/ModuleManager/ModuleManager.php(90): Zend\ModuleManager\ModuleManager->loadModule('ZFTool')
#2 [internal function]: Zend\ModuleManager\ModuleManager->onLoadModules(Object(Zend\ModuleManager\ModuleEvent))
#3 /Volumes/zend_framework/learnzf2/vendor/zendframework/zendframework/library/Zend/EventManager/EventManager.php(468): call_user_func(Array, Object(Zend\ModuleManager\ModuleEvent))
#4 /Volumes/zend_framework/learnzf2/vendor/zendframework/zendframework/library/Zend/ in /Volumes/zend_framework/learnzf2/vendor/zendframework/zendframework/library/Zend/ModuleManager/ModuleManager.php on line 189

Your path will vary, but the error is the same. Searching google didn't give me a good answer. The ZFTool page has instructions on how to install the it using composer. When the install finished I ran the command php vendor/bin/zf.php create module Debug and the new module was created.

I hope this saves you some time.