Update project-spec.coffee for windows

.gitattributes

@@ -5,3 +5,4 @@ spec/fixtures/**/*.coffee text eol=lf
 spec/fixtures/**/*.less text eol=lf
 spec/fixtures/**/*.css text eol=lf
 spec/fixtures/**/*.txt text eol=lf
+spec/fixtures/dir/**/* text eol=lf

spec/project-spec.coffee

@@ -406,7 +406,7 @@ describe "Project", ->
         paths = []
         matches = []
         waitsForPromise ->
-          project.scan /aaa/, paths: ['a-dir/'], (result) ->
+          project.scan /aaa/, paths: ["a-dir#{path.sep}"], (result) ->
             paths.push(result.filePath)
             matches = matches.concat(result.matches)