Adding Vertica to list

[ismailsimsek]

it will be interesting to see Vertica, and Vertica Eon numbers in the list

[georgewfraser]

If you're feeling ambitious, you could fork the repo and try to get vertica up-and-running. Usually each new DWH needs some tweaks to the load scripts. We'd gladly accept a PR with the needed changes and then we'd publish our own numbers in the next refresh of the blog post.