Create examples for common application types

We get common requests for how to run simple applications on the IBM Cloud. There are more complex examples on the official IBM docs, but it would be good to have a set of examples that focus on using them within the Call for Code context. These pieces could complement this sample repo, as well as the starter kits.

Some requirements would be:

- [ ] Best practices for running Lite-compatible accounts (and how to keep them from going away after 30 days of inactivity)
- [ ] Quickest possible way to deploy standalone Node.js and Python apps (Cloud Foundry, Cloud Functions)
- [ ] Quickest possible way to use Cloudant and how it differs from MySQL, MariaDB, PostgreSQL
- [ ] Quickest possible way to set up an IoT backend
- [x] Quickest possible way to run a React Native app (can reuse existing starter kits)