center title label in iPad
fixed position issue when rotated
fixed TTSliding Node memory allocation issue
code review
Merge branch 'traintrackcn-master'

# By traintrackcn
# Via traintrackcn
* traintrackcn-master:
  code review
  fixed TTSliding Node memory allocation issue
  fixed position issue when rotated
  center title label in iPad

Conflicts:
	UIScrollViewSlidingPages/Source/TTScrollSlidingPagesController.m