 
     @name extend
     @methodOf Core#
+    @see Object.extend
+    @returns self
     ###
     extend: (options) ->
       Object.extend self, options

      increaseSpeed: ->
        I.maxSpeed += 1

      # this will execute before the update method
      beforeUpdate: ->
        checkPowerupStatus()

    player.I.maxSpeed
    => 5


          I[attrName]

    ###*
    Extends this object with methods from the passed in object. A shortcut for
    <code>Object.extend(self, methods)</code>

    <code><pre>
    I =
