Create a new MouseReleased instance.
|button:||a symbol for the button that was pressed or released. (Symbol, required)|
|pos:||an Array for the position of the mouse cursor when the event occured. [0,0] is the top-left corner of the window (or the screen if running full-screen). (Array, required)|
# File lib/rubygame/events/mouse_events.rb, line 109 def initialize( pos, button ) super end