MOD: bump version to 2.0.2
MOD: bump version to 2.0.2

Change-Id: I0f6802dd520bdd4d17d75a94fcfa39fcf58fa859

yuantiku/YTKNetwork,wsxzk/YTKNetwork,raomengyun/YTKNetwork,skyline75489/YTKNetwork,KevinShawn/YTKNetwork,raomengyun/YTKNetwork