Fix for Issue 1130: updateEvent backgroundColor bug

changelog.txt

@@ -33,7 +33,7 @@ version 1.5 (3/19/11)
 	  an `events` property (function or array) with additional properties that will
 	  be applied to the entire event source:
 		- color (changes both background and border)
-		- backgroudColor
+		- backgroundColor
 		- borderColor
 		- textColor
 		- className

src/EventManager.js

@@ -237,7 +237,7 @@ function EventManager(options, _sources) {
 				e.className = event.className;
 				e.editable = event.editable;
 				e.color = event.color;
-				e.backgroudColor = event.backgroudColor;
+				e.backgroundColor = event.backgroundColor;
 				e.borderColor = event.borderColor;
 				e.textColor = event.textColor;
 				normalizeEvent(e);