Add message ordering samples (#220)

* Initial commit.

* Add unit test.

* Add message ordering sample.

* Rename a sample.

* Address comments.

Author: jmdobry

handwritten/logging-winston/samples/quickstart.js

@@ -15,7 +15,6 @@
 
 // [START logging_quickstart]
 // Imports and instantiates the Google Cloud client library
-// for Stackdriver Logging
 const logging = require('@google-cloud/logging')({
   projectId: 'YOUR_PROJECT_ID'
 });