Add buck resources to .gitignore

Change-Id: I4b9dcc13cf3496321c5a152df7204efc387b4f9c

.gitignore

diff --git a/.gitignore b/.gitignore
index 194bedc..47617be 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,7 @@
 /.classpath
 /.project
 /.settings/org.maven.ide.eclipse.prefs
-/.settings/org.eclipse.m2e.core.prefs
\ No newline at end of file
+/.settings/org.eclipse.m2e.core.prefs
+/.buckd
+/buck-cache
+/buck-out