Merge pull request #12 from jsilvestre/master

Removed: redis references
Removed useless file
Added: now perform suspend instead of halt to stop the VM. Added an option to perform a halt
Bumped npm version
Merge pull request #13 from jsilvestre/feature/vagrant-suspend

Feature/vagrant suspend
Added: a dev:destroy command to remove the VM and the box
Bumped NPM version
Merge pull request #14 from jsilvestre/feature/upgrade-vm

Command dev:destroy
fix for windows

Allow spawning of .bat files (such as Vagrant)
tested only on windows 8
Improved VM status detection. Improved error detection
Bumped version
Merge pull request #15 from jsilvestre/development

Various fix and improvements