Add a .clang-format file.

Change-Id: Ib48bc18033311ec83afd8884f1daf352ef15f2c6

.clang-format

diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..3b22926
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,5 @@
+BasedOnStyle: Google
+BinPackArguments: false
+BinPackParameters: false
+PointerAlignment: Left
+DerivePointerAlignment: false