june29/29hours — pull request #2 by hmsk (2013-04-12 21:56:23+00:00)
Title: Add PushoverNotifier

You can use [Pushover](https://pushover.net/) for Notifier.

at settings.yml:
You must set `user_token` and `app_token`.
And may set `sound`, `priority`, `device`.

See [Pushover: API](https://pushover.net/api) if you'd to know about each parameters

Example
```yaml
notifiers:
pushover:
user_token:
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
app_token:
yyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
sound:
magic
priority:
1
device:
Nexus4
```

I've added this because 29hours couldn't notify to Android device.