New ember debug command

active/0000-ember-debug-command.md

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+- Start Date: 2015-01-04
+- RFC PR: (leave this empty)
+- ember-cli Issue: (leave this empty)
+
+# Summary
+
+A new command `ember debug` to dump enough information about an ember-cli app to a report(file) that can be attached to issues.
+
+# Motivation
+
+An issue in the ember-cli ecosystem might be because of multiple reasons,
+- Bower & npm dependencies used in the project
+- Incorrect Brocfile setup
+- Config is not right
+
+Its hard for someone to take enough information out of their app and create sample repos to reproduce these issues. Instead they would just run `ember debug`, look through the generated file to make sure nothing super secret is put in to it and submit this file along with their issue. Makes the life of contributors a little more easier since they’d have most of the details they need for initial investigation right there in the generated report.
+
+# Detailed design
+
+`ember debug` would gather the following information
+- ember-cli version
+- npm version
+- node version
+- OS
+- bower dependencies 
+- npm dependencies
+- Brocfile.js
+- config/environment.js
+- Files counts in node_modues, vendor, bower_components, app folders
+- Output of a command. i.e, sometimes running `ember build` might cause the issue, so when running this command users could possibly pass an argument `--command=`(e.g. --command=debug) which we can run and include the output along with the report.
+
+# Unresolved questions
+
+