added apostrophes to make congig.js sample work out of the box

I noticed that the sample config.js was giving this error:

/p/test/cloudportal/config.js:40
	port: ,
	      ^
SyntaxError: Unexpected token ,
    at Module._compile (module.js:439:25)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.require (module.js:364:17)
    at require (module.js:380:17)
    at Object.<anonymous> (/p/test/cloudportal/server.js:8:14)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)

So I added the apostrophes to make the sample work out of the box.