Add Spotinst blog post

Signed-off-by: Richard Gee <richard@technologee.co.uk>

community.md

@@ -69,6 +69,7 @@ It would be great to hear from you especially if you have any of the above and w
 
 | Blog/repo name and description                                          | Author       | Site     | Date        |
 |---------------------------------------------------------------------|--------------|----------|-------------|
+| [Sailing Through the Serverless Ocean with OpenFaaS Cloud](https://spotinst.com/blog/2019/03/25/sailing-through-the-serverless-ocean-with-openfaas-cloud/) | Pavel Klushin | spotinst.com | 25-Mar-2019 |
 | [Process Google Forms Responses with OpenFaaS](https://www.openfaas.com/blog/google-form-response/) | Burton Rheutan | openfaas.com | 06-Mar-2019 |
 | [Node Gatekeeper - a HMAC wrapper for Node.js](https://github.com/cabrerabywaters/faas-node-gatekeeper) | Ignacio Cabrera | github.com | 28-Feb-2019 |
 | [Favorite Tools - OpenFaaS](https://fischbacher.rocks/post/tools-openfaas/) | Markus Fischbacher | [fischbacher.rocks](fischbacher.rocks) | 5-Mar-2019 |