Add capacity for local provisioning scripts via a shell script called local.sh in requirements/local/local.sh
Update Vagrantfile to allow for custom install locations on tapas/tapas_rails.
Update plattr_provisioning.sh to run safely more than once.
Simplify tapas.conf addition, correctly check for the file bin/composer,  and shorten up logic for some checks.
Merge pull request #3 from NEU-DSG/feature/local_provisioning

Feature/local provisioning