Set git to ignore .android_config

Review URL: https://codereview.appspot.com/6863056

git-svn-id: http://skia.googlecode.com/svn/trunk@6772 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/.gitignore b/.gitignore
index b10e128..237b7f1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+.android_config
 .DS_Store
 .gclient*
 /gyp/build/