Debug node code instructions (#35)

* debug node code instructions

* updated instructions based on Hemingway

* simplifed write up, alternate Chrome options

* combinded node-debug with code editor integrations

* removed recomended for NiM, opion - not required

Author: maxwondercorn

guides/pages.yml

@@ -61,7 +61,7 @@
     url: 'index'
   - title: 'Windows support'
     url: 'windows'
-  - title: 'Code Editor Integrations'
+  - title: 'Developer Tools'
     url: 'dev-tools'
   - title: 'Common issues'
     url: 'common-issues'

guides/reference/dev-tools.md

@@ -1,4 +1,9 @@
 <!-- Copy over code editor content -->
+<!-- This intro paragraph needs improvement -->
+
+This section provides information on integrating Ember into various code editors and how to debug ember-cli node code.
+
+## Code Editor Integrations
 
 ### Visual Studio Code
 If you are using [VSCode](https://code.visualstudio.com/) with `ember-cli`, there's an [official
@@ -146,3 +151,27 @@ Some useful Vim plugins for working with Ember.js:
 
 - [ember_tools](https://github.com/AndrewRadev/ember_tools.vim) - Provides various tools for navigation and code reformatting, similar to rails.vim for Rails.
 - [projectionist](https://github.com/tpope/vim-projectionist) - Powerful project navigation, provided you write your own code projections. Here's [an example](https://gist.github.com/AndrewRadev/3524ee46bca8ab349329)
+
+## Debugging Node Code
+
+Node's debugger with Chrome's DevTools can debug node code in an addon or app. For example, debugging Broccoli errors in an addon's `index.js`.
+
+To use the node debugger, open Chrome DevTools with  `chrome://inspect` or use the [Node.js - inspection manager (NiM)](https://chrome.google.com/webstore/detail/nodejs-v8-inspector-manag/gnhhdgbaldcilmgcpfddgdbkhjohddkj) from the Chrome web store. See Node [documentation](https://nodejs.org/en/docs/guides/debugging-getting-started/#chrome-devtools-55) for details.
+
+To debug, place a `debugger` statement where the code should break.  Then serve the application using
+
+```bash
+node --inspect node_modules/ember-cli/bin/ember serve
+```
+
+You will see a message similar to this in the console.
+
+
+```bash
+Debugger listening on ws://127.0.0.1:9229/9c664016-bcfa-444b-b7fe-57d91a0d6e8f
+For help see https://nodejs.org/en/docs/inspector
+Debugger attached.
+```
+If you used `chrome://inspect`, click on the `inspect` link to launch DevTools. NiM will automatically open DevTools.
+
+Stop Ember serve using `Ctrl-C` and then close the DevTools tab.