Automatically update gh-pages after Documentation and examples have been committed

[megoth]

Currently there seems to be a lack of automatic update of gh-pages when new documentation is added. We also need to generate the API documentation using npm run doc for gh-pages, since I think it's bad practice to commit files that are automatically generated anyway.

[michielbdejong]

Yes. I would say it's hard to determine if any typedoc comment blocks or examples pages changed, so just tell Trabvis tfor every master branch commit to:

• check out gh-pages
• merge in the master branch
• npm run build (so that lib/webpack-bundle.js is generated, which is needed for the examples)
• npm run doc ( so that Documentation/api. is generated)

Currently, we have been merging the master branch into the gh-pages branch manually, and then running npm run build and npm run doc on it.
https://solid.github.io/solid-ui/examples/buttons/ works
https://solid.github.io/solid-ui/Documentation/form-ecosystem.html works
https://solid.github.io/solid-ui/Documentation/api/index.html doesn't, which is weird.