Keep the entries in .gitignore sorted in alphabetical order.

Signed-off-by: Thiago Farina <tfarina@chromium.org>

Review URL: https://codereview.appspot.com/6506107

git-svn-id: http://skia.googlecode.com/svn/trunk@5522 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/.gitignore b/.gitignore
index cac3278..b10e128 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,6 @@
-/out/
-/third_party/externals/
-/gyp/build/
-/xcodebuild/
 .DS_Store
 .gclient*
+/gyp/build/
+/out/
+/third_party/externals/
+/xcodebuild/