ar_track_alvar: 0.5.0-0 in 'indigo/distribution.yaml' [bloom]

Increasing version of package(s) in repository `ar_track_alvar` to `0.5.0-0`:

- distro file: `indigo/distribution.yaml`
- bloom version: `0.5.10`
- previous version for package: `null`

## ar_track_alvar

```
* move README to root directory
* Merge remote-tracking branch 'origin/hydro-devel' into indigo-devel
* ar_track_alvar package uses ar_track_alvar_msgs
* restructuring packages. Separate out the message package.
* Contributors: Jihoon Lee
```

## ar_track_alvar_meta

```
* add meta package
* Contributors: Jihoon Lee
```