rsync 3.1.1

rsync 3.1.1 was released on June 22nd, 2014.

I've done the following test to make sure it works.

OS X 10.7.5 and 10.9.3 <=> Arch Linux x86_64 both direction worked perfectly well.

```bash
rsync -av --progress --stats source target
rsync -avz --progress --stats source target
```
> NOTE: `-zz` is new in 3.1.1, requires both sides are at least 3.1.1. So it doesn't work for OS X as the default daemon is 2.6.9.

OS X 10.7.5 <=> OS X 10.9.3

```bash
rsync -av --progress --stats source target
rsync -avz --progress --stats source target
```

There was no crash in 12+ transfers.