Emotion: Add phenomic example

[tkh44]

We should add an example to the phenomic repo.

https://github.com/phenomic/phenomic/tree/master/examples

https://twitter.com/moox/status/915973669578518528

[tgrecojs]

@tkh44 I just spent some time getting a repo ready. here is the commit --> react-app-styles-with-emotion

[MoOx]

Thank you!

[MoOx]

Actually this example does not work correctly, but it's due to the fact that emotion-server rely on the html to extract critical styles. Phenomic does gives html to the user directly. I will digg a little if I can change something into Phenomic core but that won't be easy for us... :(

[MoOx]

Ok I made a quick change so now it's working perfectly!

https://github.com/phenomic/phenomic/tree/master/examples/react-app-styles-with-emotion

[tkh44]

Thanks @MoOx