Add OF on Docker Swarm on RPi blog

Adding blog by Tim Levett

Signed-off-by: Martin Dekov <mdekov@vmware.com>

community.md

@@ -66,6 +66,7 @@ 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        |
 |---------------------------------------------------------------------|--------------|----------|-------------|
+| [OpenFaas on Docker Swarm on Raspberry Pi](http://www.timlevett.com/2019/03/openfaas-on-docker-swarm-on-raspberry-pi.html) |  |  | 4-Mar-2019  |
 | [Build your serverless functions with OpenFaaS on Azure](https://sajeetharan.com/2019/03/03/openfaas-revolution-is-here/) | Sajeetharan Sinnathurai | sajeetharan.com | 3-Mar-2019 |
 | [Artifactory and OpenFaaS – Containers Everywhere!](https://jfrog.com/blog/artifactory-and-openfaas-containers-everywhere/) | Leon Stigter | jfrog.com | 19-Feb-2019 |
 | [FaaS comes to Fargate: OpenFaaS with AWS Fargate](https://www.openfaas.com/blog/openfaas-on-fargate/) | Edward Wilde | openfaas.com | 12-Feb-2019 |