Merge pull request #12 from jpm/master

Fixed small issue where expired entries wouldn't be removed from the dictionary file, resulting in very large files in the long run.

EGOCache.m

@@ -96,12 +96,17 @@ - (id)init {
                                                attributes:nil 
                                                     error:NULL];
 
+		NSMutableArray *removeList = [NSMutableArray array];
 		for(NSString* key in cacheDictionary) {
 			NSDate* date = [cacheDictionary objectForKey:key];
 			if([[[NSDate date] earlierDate:date] isEqualToDate:date]) {
+				[removeList addObject:key];
 				[[NSFileManager defaultManager] removeItemAtPath:cachePathForKey(key) error:NULL];
 			}
 		}
+		if ([removeList count] > 0) {
+			[cacheDictionary removeObjectsForKeys:removeList];
+		}
 	}
 
 	return self;