vfsStream submodule url doesn't work well with firewalls

[kojiromike]

The vfsStream submodule url is git://github.com/mikey179/vfsStream.git which is blocked by our corporate firewall; however https://github.com/mikey179/vfsStream.git would work just as well and would be far less likely to be blocked by firewalls.

Also, http:// is preferred over git:// nowadays.

[cgrossde]

+1. Just had the same problem. Maybe declare vfsStream as a dependency in composer instead of using a submodule.