add some .gitignores related to gm and tools

NOTREECHECKS=True
NOTRY=True
R=scroggo@google.com
TBR=scroggo

Author: epoger@google.com

Review URL: https://codereview.chromium.org/234603004

git-svn-id: http://skia.googlecode.com/svn/trunk@14150 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/.gitignore b/.gitignore
index c61286d..def66f1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,10 +1,11 @@
+*.pyc
 *.swp
 .android_config
 .DS_Store
 .gclient*
-*.pyc
+.gm-actuals/
 gyp/build/
 out
+TAGS
 third_party/externals/
 xcodebuild/
-TAGS