Add global.homeDir

Ick, this should be handled by an npm or hopefully a patch to Node.

src/atom-application.coffee

@@ -261,7 +261,7 @@ class AtomApplication
   runSpecs: (exitWhenDone) ->
     specWindow = new AtomWindow
       bootstrapScript: 'spec-bootstrap'
-      resourcePath: path.join(@getHomeDir(), 'github', 'atom')
+      resourcePath: path.join(global.homeDir, 'github', 'atom')
       exitWhenDone: exitWhenDone
       isSpec: true
 

src/main.coffee

@@ -9,6 +9,8 @@ optimist = require 'optimist'
 nslog = require 'nslog'
 _ = require 'underscore'
 
+global.homeDir = process.env[if process.platform is 'win32' then 'USERPROFILE' else 'HOME']
+
 console.log = (args...) ->
   nslog(args.map((arg) -> JSON.stringify(arg)).join(" "))
 
@@ -35,9 +37,6 @@ delegate.browserMainParts.preMainMessageLoopRun = ->
 
     AtomApplication.open(args)
 
-getHomeDir = ->
-  process.env[if process.platform is 'win32' then 'USERPROFILE' else 'HOME']
-
 setupCrashReporter = ->
   crashReporter.setCompanyName 'GitHub'
   crashReporter.setSubmissionUrl 'https://speakeasy.githubapp.com/submit_crash_log'
@@ -85,7 +84,7 @@ parseCommandLine = ->
     dev = true
     resourcePath = args['resource-path']
   else if dev
-    resourcePath = path.join(getHomeDir(), 'github', 'atom')
+    resourcePath = path.join(global.homeDir, 'github', 'atom')
 
   try
     fs.statSync resourcePath