changed to windowDidBecomeKey

Controller.h

@@ -31,8 +31,6 @@
 - (NSString *)pluginURL;
 - (void)handleGetURLEvent:(NSAppleEventDescriptor *)event withReplyEvent:(NSAppleEventDescriptor *)replyEvent;
 - (void)unreadMentions:(NSInteger)count;
-- (void)mentionsWindowDidExpose:(id)sender;
-
 
 OSStatus handler(EventHandlerCallRef nextHandler, EventRef theEvent, void* userData);
 

Controller.m

@@ -129,10 +129,10 @@
 }
 
 // Mentions window has been visible
-- (void)windowDidUpdate:(NSNotification *)notification {
+- (void)windowDidBecomeKey:(NSNotification *)notification {
 	if ([notification object] == mentionsViewWindow) {
 		[self unreadMentions:0];		
-	}
+	}	
 }