Cleanup repo

[jtemporal]

What is the purpose of this Pull Request?

fix #11

What was done to achieve this purpose?

• Remove .pyup.yml file
• Remove src folder (since the same content is available in the okfn-brasil/serenata-de-amor repo)
• move all the jupyter notebooks from notebooks/deliver and notebooks/develop to notebooks (and delete the empty folders)
• move the Dockerfile, the requirements.txt and the jupyter_notebook_config.py to the project root
• update the Dockerfile to the new structure

How to test if it really works?

Run the instructions on getting started under To run Jupyter using Docker section

Who can help reviewing it?

@cuducos @rodolfo-viana

TODO

• create the setup to download the datasets into data/
• create docker-compose file to "pretty-up" the docker running process