upgrade underscore js
Randomize enemy npc attack.

allow options to pass through to text fragment movement functions
add underscore.min.js to repo
README update
Add a util method for random integer
README update
Only load box2d when box2d is an argument to the text fragment

for spawning attacks
Reinstigate auto attacking
Remove animation delays when player gets hit or defends
Give a force within a random range when npc monster attacks with glob
increase speed of npc monster auto attack