Add buck resources to .gitignore

Change-Id: I90d019aa764f6f25bd0b3ba843f36b7e40398c6b
diff --git a/.gitignore b/.gitignore
index 80d6257..47617be 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,6 @@
 /.project
 /.settings/org.maven.ide.eclipse.prefs
 /.settings/org.eclipse.m2e.core.prefs
+/.buckd
+/buck-cache
+/buck-out