First commit

Java based solution for the math behind finding simple and compound
interest, as a prototype for creating an amortizer.
Breaking ground on Android UI

Made simple non-functional but existent Android UI for first prototype.
Have amortization functionality in place.
Updated Android Side

Updated UI
Added Driver.java
Relocated strings to strings.xml
Did some commenting
Added UI to back-end wiring

Initialized EditText controls and assigned values contained to variables
of type double.

TODO: Add try-catch blocks to capture invalid input and send graceful
error message if bad input.
Added exception handling for Main UI

Added try-catch blocks inside of functions to check for bad input from
user for principal, interest rate, and loan term.