Add a gitignore

Change-Id: Ibe6e9536b82cc59f2f5cbc2aadc5a0077d1c700b
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ec78936
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+bazel-out
+bazel-bin
+bazel-genfiles
+bazel-testlogs