README Documentation

[johnkmzhou]

Update Readmes in top level directory, KukaApp, and web directory.

[tyliec]

Some prerequisites are required for this project that aren't pointed out yet:

• NPM

We also need to run yarn global add firebase/npm install -g firebase to get the later commands to work

Nested README.md: https://github.com/CodeforHawaii/kuka/tree/develop/KukaApp

Specify non-expo