first commit

I someone feel that we need at least two records to check ordering. Please also add `expect(Standup.newest_first[1]).to eql(@standup1)` or you can refactor it a bit and say:

```
standups = Standup.newest_first

expect(standup[0]).to eql(@standup2)
expect(standup[1]).to eql(@standup1)
```