Switch to Hammer.js for mouse and touch event handling
2nd pass and fix test description
update hammer dependency to bug fix version, fix keyActions being an array and tweak/add tests for InputManager, MouseAction, and TouchAction
test volo with updated zip dependency
Merge branch 'hammer' into box2d_sprites_example
frozen/box2d/entities and frozen/box2d/joints were missing from build profile
cleanup box2d sprites example
add gesture demo based on zombies using the hammer.js integration