hubot-gitlab-agile/scripts/templates/burndown.html

Hubot script to integrate with gitlab

```
Start Burndown

     Open Effort: <%= open %>
+  Closed Effort: <%= closed %>
*============================*
    Total Effort: <%= total %>
Remaining Effort: <%= total - closed %>

   % Open Effort: <%= Number(open/total*100).toFixed(2) %>%
 % Closed Effort: <%= Number(closed/total*100).toFixed(2) %>%
End Burndown
```