Use React.createFactory in examples/basic/

[ThomasCrevoisier]

See #2315

Reviewers: @zpao @spicyj @syranide

[syranide]

The preferred approach is to use var ExampleApplication = React.createFactory(...); and then ExampleApplication(...) I believe, React.createElement is not generally intended for the end-user.

[syranide]

Oh, I just saw #2315... @zpao shouldn't they use React.createFactory instead?

[zpao]

Oh yea, I suppose they should. I was thinking about the general case of just putting in what the JSX got transformed to, but showing the normal approach is a good idea. Let's do that.

Also, nits: let's use //-style comments, and not put them inside the function call. Make the comment when calling createFactory.

[ThomasCrevoisier]

Okay, I've made the change.

[zpao]

I really appreciate this. I may end up tweaking this a little bit as I do a more general update to the examples.

[syranide]

Thanks! 👍