edx/edx-platform — pull request #634 by antoviaque (2013-08-10 00:17:38+00:00)
Title: vagrant: Add flag to ensure install is completed at least once

The provisioning script used to check for the existence of the `/opt/edx/node_modules` folder to decide if the installation has already been completed. However, since additional instructions were executed by the installer afterwards, any installation error (eg. download timeouts on low quality connections) happening between the creation of that folder and the end of the installation wouldn't be recovered from on the next vagrant instance boot.