Add bazel output to .gitignore

Change-Id: Ic7a300381badaf9c5c795da7f82ed10e5a433c3b

.gitignore

diff --git a/.gitignore b/.gitignore
index 62a4f75..485451f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,4 @@
 obj/
 jni/libs/
 .buildinfo
+bazel-*