update documentation to better explain timer.addEvent() usage

exec/load/event-timer.js

@@ -6,7 +6,13 @@
 	methods:
 	
 	-	Timer.cycle()
-	-	Timer.addEvent()
+	-	Timer.addEvent(interval,repeat,action,arguments,context)
+		
+		- interval = time to wait before running event (in milliseconds)
+		- repeat = how many times to run the event (TRUE = run infinitely, FALSE = run once)
+		- action = the function to call when running the event
+		- arguments = the arguments to pass to the action 
+		- context = the context (scope) in which to run the event
 	
 	sample usage: