Fixing parameters of run_provisioner

- Removed logging since that was moved one method up in the Vagrant code
Merge pull request #142 from keitwb/run_provisioner_fix

Fixing parameters of run_provisioner
simple changes by rubocop recomendations
version 0.0.15 , min supported vagrant version 1.4.3
Update changelog
Merge pull request #143 from sciurus/CHANGELOG

Update changelog
Remove code paths for older vagrant.

Since previous commits have broken compatiblilty with vagrant versions
older than 1.4, this commit removes code supporting those versions.
Merge pull request #148 from sciurus/1.4_only

Remove code paths for older vagrant.