Project.getFilePaths does not traverse into ignored directories

spec/app/project-spec.coffee

@@ -71,3 +71,12 @@ describe "Project", ->
         project.setPath(null)
         expect(project.getPath()?).toBeFalsy()
         expect(project.getRootDirectory()?).toBeFalsy()
+
+
+  describe ".getFilePaths()", ->
+    it "ignores files that return true from atom.ignorePath(path)", ->
+      spyOn(project, 'ignorePath').andCallFake (path) -> fs.base(path).match /a$/
+
+      project.getFilePaths().done (paths) ->
+        expect(paths).not.toContain('a')
+        expect(paths).toContain('b')

src/app/project.coffee

@@ -1,6 +1,8 @@
 fs = require 'fs'
-Buffer = require 'buffer'
 _ = require 'underscore'
+$ = require 'jquery'
+
+Buffer = require 'buffer'
 EventEmitter = require 'event-emitter'
 Directory = require 'directory'
 
@@ -31,8 +33,20 @@ class Project
     @rootDirectory
 
   getFilePaths: ->
-    fs.async.listTree(@getPath()).pipe (paths) =>
-      @relativize(path) for path in paths when fs.isFile(path)
+    deferred = $.Deferred()
+
+    filePaths = []
+    fs.traverseTree @getPath(), (path, prune) =>
+      if @ignorePath(path)
+        prune()
+      else if fs.isFile(path)
+        filePaths.push @relativize(path)
+
+    deferred.resolve filePaths
+    deferred
+
+  ignorePath: (path) ->
+    fs.base(path).match(/\.DS_Store/) or path.match(/(^|\/)\.git(\/|$)/)
 
   open: (filePath) ->
     if filePath?