supporting-docs/projects: Add matrix-pollbot

matrix-pollbot is a bot that allows you to create polls to be voted on by
members of a Matrix room.

supporting-docs/projects/2017-05-18-matrix-pollbot.md

@@ -0,0 +1,14 @@
+---
+layout: project
+title: matrix-pollbot
+categories: projects other
+description: A bot for creating polls
+author: Shawn Anastasio
+maturity: Early Beta
+---
+
+# {{ page.title }}
+
+Pollbot is a Matrix bot written using [python-matrix-bot-api](https://github.com/shawnanastasio/python-matrix-bot-api/) that allows you to create polls that can be voted on by members of a room.
+
+The project lives on [GitHub](https://github.com/shawnanastasio/matrix-pollbot).