add .clang-format exemplars

Adds .clang-format for cpp and javascript

Change-Id: I8a7ed63be54a3f44ef448cf603ee2a8643436afd
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/style/javascript/.clang-format b/style/javascript/.clang-format
new file mode 100644
index 0000000..1240600
--- /dev/null
+++ b/style/javascript/.clang-format
@@ -0,0 +1,5 @@
+---
+Language:        JavaScript
+BasedOnStyle:    Google
+ColumnLimit:     80
+...