WaitTimer

== Intro ==
This small library provides an easy way to generate timed events.
You can setup a delayed or repeated function call without messing around with a dummy frame and OnUpdate events.
== Setup ==
Copy theses files to your addon or any subdirectory of it
LibStub.lua
WaitTimer.lua
Usually people will use a "lib" subdirectory
Add them at the beginning of your .toc file to make sure they get loaded.
== Init ==
local WaitTimer = LibStub("WaitTimer")
put it at the beginnig of your lua file where you want to use the WaitTimer.
== Usage ==
timer_id = WaitTimer.Wait(seconds, function, id, data)
* seconds = how long to wait
* function = will be called when time is elapsed if the function returns a value, this value is used as new wait_time.
* id = (optional) a fixed timer id If another timer with the same ID exists it will be replaced
* data = (optional) will be passed to the function call
* timer_id = id which can be used in the other functions It's equal "id" when it was provided
WaitTimer.Stop(id)
* stops the timer without calling the function
waittime = WaitTimer.Remaining(id)
* @return remaining seconds or nil
WaitTimer.SetTime(id, delay)
* reset the wait time
* if <delay> is ommited the function will be triggert on next update