Consistent naming convention

[jcmoyer]

hug strives to be consistent with the naming convention presented in Lua's standard library. Since the initial hug code is gathered over the course of a few projects, some of the names chosen for functions aren't following this convention. These function names need to be changed:

• gamestate (these proposed names will also be consistent with LÖVE callback names)
  • onEnter -> enter
  • onLeave -> leave
• camera
  • panCenter
  • calculatedX
  • calculatedY
• statemachine
  • findBaseState

    7 should address this issue for the timerpool module.

[jcmoyer]

All of the mixed case function names have been renamed/replaced.