add [UITabBar startTrack];

review by daiqiang

@@ -18,6 +18,7 @@
 #import "UIAlertView+AutoTrack.h"
 #import "UIWebView+AutoTrack.h"
 #import "UIViewController+AutoTrack.h"
+#import "UITabBar+AutoTrack.h"
 
 #define kYHEventReportIgnoredViewController @"YHEventReportQueue"
 
@@ -113,6 +114,7 @@ static NSArray *kYHEventReportIgnoredViewControllerArray;
     [PowerfulBannerView startTrack];
     [UIActionSheet startTrack];
     [UIAlertView startTrack];
+    [UITabBar startTrack];
     
     NSError *error = NULL;
     // Actions & Events
@@ -134,6 +136,7 @@ static NSArray *kYHEventReportIgnoredViewControllerArray;
 -(void)startPerformanceTrack{
     self.performanceTrackEnabled = YES;
     [UIViewController startTrack];
+    [UITabBar startTrack];
 }
 
 -(void)setUid:(NSString *)uid{