Write READ.md files

[jackiekazil]

To help people understand the structure of the repo & the contents of files & what to do with them to play around....
Locations that could use READ.md files:
https://github.com/PythonJournos/LearningPython/tree/master/projects
https://github.com/PythonJournos/LearningPython/tree/master/projects/fdic
https://github.com/PythonJournos/LearningPython/tree/master/projects/census