Update StocksSim.java
Update StocksSim.java

- Added ability to loop through after you enter how many stocks you want to buy.
- Refined and added a few display of texts.
- Fixed the counter for how many days total you've simulated.
- Added ability to type stock names and other string values in all caps or all lower case.
- Fixed instance where stock prices generated the same numbers after every simulation.
sagyakwa/Orion