add notes on java if/else, else if, and nested if, + code examples
add notes on switch, + code examples, and explore how to generate random numbers in java
add notes on loops, including nested loops, + code examples
add notes on for-each, plus code examples
Add notes on While and Do While loops, + code examples using do while and switch to make a basic grade system
add notes on continue and continuing to a label, + code examples
Added Javadoc to Break and Continue notes
Merge pull request #2 from ryanhburbank/statements_and_loops

Statements and loops