Update, insert new ping method

Took 29 minutes

node_modules/mz/index.js

@@ -0,0 +1,8 @@
+module.exports = {
+  fs: require('./fs'),
+  dns: require('./dns'),
+  zlib: require('./zlib'),
+  crypto: require('./crypto'),
+  readline: require('./readline'),
+  child_process: require('./child_process')
+}