Connect develop.svn with (upcoming) develop.git

While the official WordPress Git repo `develop.git.wordpress.org` is not yet fully [up and operational](https://twitter.com/scribu/status/378254120362057728)—although it now is an actual Git repo—how should we go about making both Git and SVN available in VVV? Can we utilize `git-svn` to add `develop.svn.wordpress.org` as a remote for `develop.git.wordpress.org`?

See #111 and #113