Birds and Blades - MODIFIER UPDATE

This update has a large focus on MODIFIERS and their ability to change the game in fun and intersting ways. Also a couple bug fixes if you're interested.

CHANGES MADE:

• Added Main Menu
• Added new MODIFIER options that change the game in many interesting ways
• Turret price changed from (200, 200) to (300, 300)
• All units in army now attack closest object to flag rather than closest object to themselves
• Material graph at the end of the game doesn't drop when something was bought

BUGS FIXED:

• Archer Huts now fade out after destruction
• Surrender button now goes away after player surrenders