Add '--split' option to 'meteor create'.

The '--split' option creates an app where the client-side and server-side code are separated. It uses the 'skel-split' skeleton to create the project. To use it -

    meteor create --split <name>

This creates a project with this directory structure -

    .
    |-- client
    |   |-- <name>.css
    |   |-- <name>.html
    |   `-- client.js
    |-- model.js
    `-- server
        `-- server.js

Client-side code goes in `client.js`, server-side code goes in `server.js`, and shared code goes in `model.js`.