添加新样式
merge code
Fix: Use backgroundColor of superview for centerContainerView

Allows to use color set in storyboard for background color of all subviews.
There is no way to do this from library user code, he is stuck with white color.

Biggest problem (use case): controller inside pager needs to be set to clearColor,
because we use window background image pattern.
1.整理所有代码 2.修复bug
update XHTwitterPaggingViewer.podspec to 0.5
1.修改podspec file 2.修改图片资源文件
add gitignore file
Merge branch 'pr/10'
修改 XHTwitterPaggingViewer.podspec
修改 XHTwitterPaggingViewer.podspec
Update XHTwitterPaggingViewer.podspec
Merge pull request #2 from xhzengAIB/master

update