- improve pageControl click event

Signed-off-by: Chen Yanjun <chenyanjun@xmlailuo.com>
 - comment

Signed-off-by: Chen Yanjun <chenyanjun@xmlailuo.com>
Merge branch 'master' of https://github.com/interchen/ImagePlayerView
 - update podspec

Signed-off-by: Chen Yanjun <chenyanjun@xmlailuo.com>