Beginning to add the betting mechanism
Added exception to todo
Added exception to address book
Added try/catch to todo
Added try/catch to address book
Updated exception to InvalidInput
Updated exception to InvalidInput
Finished objects-json-js.html

JavaScript forEach loops were difficult to understand, but now that I
do they seem really cool.
Worked with Math objects to find the area of a circle.
Added moment to js folder
Betting mechanism improved, cards now overlap
Incorporated navbar into blackjack, added blackjack option to Projects drop down
Completed objects-date-js.html