Sort .gitignore

--
Change-Id: Ic6ba5267f95f5e4eb34a9588465e6def68f96fe3
Reviewed-on: https://bazel-review.googlesource.com/#/c/2770/
MOS_MIGRATED_REVID=113163386
diff --git a/.gitignore b/.gitignore
index 8fbc80a..fa433ac 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,15 +1,15 @@
-.*.swp
 *~
-/output/
-/bazel-bin
-/bazel-genfiles
-/bazel-out
-/bazel-bazel
-/bazel-testlogs
-/.settings
-/.project
+.*.swp
 /.classpath
 /.factorypath
 /.idea/
+/.project
+/.settings
 /base_workspace/*
+/bazel-bazel
+/bazel-bin
+/bazel-genfiles
+/bazel-out
+/bazel-testlogs
 /bazel.iml
+/output/