jkniss/README.md file addition for Micro Python research Part 2

Includes:
Typo fixes
Description
History
What it's Good For
Code Examples
Some implementation discussion
Brief Micro Python Board description
Example of Python3 integer memory allocation
Note: I probably need to talk more about recursion in Micro Python, I am playing with it now and still not confident I can explain exactly *why* clear enough yet, beyond general stack and RAM usage.