Data Container volumes are parsed as host volumes
Data Container volumes are parsed as host volumes

When using data containers with exposed volumes (`- /path/to/volume`), the path extraction with sed in [docker-osx-dev#L346](https://github.com/brikis98/docker-osx-dev/blob/master/docker-osx-dev#L346) returns the full line when no match was made.

While trying to rsync these *volumes*, the script chowned `/`, effectively wrecking the boot2docker VM.
This commit fixes this by adding no-autoprint (`-n`) option to the sed call in L346

rudenoise/docker-osx-dev,oliverguenther/docker-osx-dev,devotox/docker-osx-dev,ilkka/docker-osx-dev,styleseat/docker-osx-dev,maciekrb/docker-osx-dev,interactive-pioneers/docker-osx-dev,p-a/docker-osx-dev,yoanisgil/docker-osx-dev,costacruise/docker-osx-dev,brikis98/docker-osx-dev,davidmarkclements/docker-osx-dev,ereslibre/docker-osx-dev,ejones/docker-osx-dev,Simperfit/docker-osx-dev,aforward/docker-osx-dev