remove hostname and root path from gruntfile

[kavanagh]

The Gruntfile.js over in generator-ig-job has this snippet

igdeploy: {
            options: {
                src: 'dist',
                server: 'ftlnx109-lviw-uk-p.osb.ft.com',
                targetRoot: '/var/opt/customer/apps/interactive.ftdata.co.uk/var/www/html',
                targets: {
                    demo: 'sites/2013/seasonal-appeal/myanmar/demo',
                    live: 'sites/2013/seasonal-appeal/myanmar/live'
                }
            }
        },

Would it possible to omit server and targetRoot from my Gruntfile? They could be picked up from the users local .igdeploy file? That way we don't need to expose info about our servers in code repos.

Also, having these values external to the Grunfile (and part of the build environment) make it possible for them to be overriding using environment variables.

So if my Grunfile.js is as above then this will override the server and targetRoot properties in my .igdeploy file.