React Router

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Implement React Router. We may need to install webpack-dev-server to allow React Router to work locally.

• [x] Install the React Router library.

• [x] Add components to act as 'pages' within our application.

• [x] Test that the navigation between 'pages' works.

Useful links:

• https://codeburst.io/getting-started-with-react-router-5c978f70df91

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Can be tested using a Python server:

$ python -m SimpleHTTPServer 8000

Then view the pages using the URL:

http://localhost:8000

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Another good tutorial here: https://medium.freecodecamp.org/beginners-guide-to-react-router-4-8959ceb3ad58