only first private_network is used 

this will prevent using last private_network for the hostname
sync hosts file state in blocks instead of lines
make get_machines return machine instances instead of machine names
Merge pull request #52 from pbitty/hosts_file_sync

Sync state with hosts file in blocks
Merge pull request #64 from sstrato/patch-1

only first private_network is used
Fix regression in #52.

We accidentally stopped filtering out machines from other providers.
only update hosts file if it has changed - for both host and guest
Merge pull request #79 from pbitty/fix_pr52_regression

Fix regression in #52.
Merge pull request #78 from thematthopkins/less_sudo_2

only update hosts file if it has changed - for both host and guest

Closes #68.
Replaced deprecated config_global with vagrantfile.config
Fixes introduced error running vagrant hostmanager command
Merge pull request #81 from januzis/vagrant-1.5-support

Replaced deprecated config_global with vagrantfile.config to support vagrant 1.5 API
update Gemfile and test Vagrantfile to support vagrant 1.5

relates to #80
fix provisioner issue in vagrant 1.5

relates to #80
allow overriding vagrant box in test Vagrantfile via ENV variable
create changelog
bump for 1.4.0 release
Merge pull request #84 from pbitty/release_140

Ready for 1.4.0 release