update deps to latest yang-express and yang-js
diff --git a/test/mocha.opts b/test/mocha.opts
new file mode 100644
index 0000000..38f602d
--- /dev/null
+++ b/test/mocha.opts
@@ -0,0 +1,3 @@
+--require should
+--compilers coffee:coffee-script/register
+--sort