As chundo said, it's currently not yet possible to trigger a vote through chat. This will be added in 0.2 (as the first post says).
@chundo: awesome plugin, I was actually thinking of doing this myself but couldn't figure out what the best way would be to do it. I hope this will become part of the SM core so we can do away with the stock voting plugins, and can easily make custom votes too.
Idea: make a timeleft option to run a vote x minutes before the map ends. Would make it possible to replace rtv
