Should do an initial rsync as rsync-auto does

[craiga]

When rsync-auto runs, it does an initial sync to make sure any changes you've made locally are copied across.

$ vagrant rsync-auto
==> default: Doing an initial rsync...
==> default: Rsyncing folder: /Users/craiga/my-source-code/ => /var/my-source-code
==> default:   - Exclude: [".vagrant/", ".git*"]
==> default: Watching: /Users/craiga/my-source-code

This is handy when you make a change, see that your change hasn't been applied, and then remember that you forgot to start vagrant rsync-auto.

gatling-rsync-auto doesn't do this, and it's a little annoying.

$ vagrant gatling-rsync-auto
==> default: Watching: /Users/craiga/my-source-code

I can run vagrant rsync; vagrant gatling-rsync-auto to get around this, but if gatling-rsync-auto is meant as a drop-in replacement for rsync-auto it should replicate this behaviour.

[craiga]

…and then I realised this is a dupe of #13.