Fixed README and About written (changed from 'main' to 'about').
I worked on the architecture and created a StockObject and have a list of these in the new PortfolioService I created.  The 'add Stock' functionality now works this way.

TODO:
1. Implement the stock lookup
I've got the lookup functionality and portfolio table update happening.  Great!

Next is to:
1) write tests and 
2) add a timeout to refresh prices (but should only be done if market is open - Volume will be > 0).