Allow user to specify version of vagrant to install

Allow user to specify version of vagrant to install

Merge pull request boxen#30 from salimane/pr_regex_check

Removed Regex check on vagrant box name, fix boxen#24

Merge pull request boxen#27 from trq/feature/package-update

Bump version to 1.4.2

Merge pull request boxen#25 from dieterdemeyer/master

Bump version to 1.4.1

Merge pull request boxen#23 from rapaul/version-1_4_0

Bump vagrant version to 1.4.0

change package title in order to upgrade. Fix boxen#19

Merge pull request boxen#21 from webdizz/master

Update to 1.3.5

Merge pull request boxen#18 from klynton/patch-1

Updating to Vagrant 1.3.4.

Merge pull request boxen#17 from robbiegill/v133

Update to vagrant 1.3.3