Bumped default version of docker-compose to 1.6.2.
Bumped default version of docker-compose to 1.6.2.

What
===
Bumped default version of docker-compose to 1.6.2.

Why
===
To gain the latest features for default installations and to support for
docker-compose version 2 YAML files.

leighmcculloch/vagrant-docker-compose