tip prompted Options window demo, featured ios programming learning source, a good reference.

.gitignore
Demo
....\TSPopoverDemo
....\TSPopoverDemo.xcodeproj
....\.......................\project.pbxproj
....\.............\AppDelegate.h
....\.............\AppDelegate.m
....\.............\en.lproj
....\.............\........\InfoPlist.strings
....\.............\main.m
....\.............\MainViewController.h
....\.............\MainViewController.m
....\.............\TSPopoverDemo-Info.plist
....\.............\TSPopoverDemo-Prefix.pch
LICENSE.txt
readme.md
Screenshots
...........\Screenshot_1.png
...........\Screenshot_2.png
...........\Screenshot_3.png
...........\Screenshot_4.png
...........\Screenshot_5.png
...........\Screenshot_6.png
TSPopover
.........\TSActionSheet.h
.........\TSActionSheet.m
.........\TSPopoverController.h
.........\TSPopoverController.m
.........\TSPopoverPopoverView.h
.........\TSPopoverPopoverView.m
.........\TSPopoverTouchesDelegate.h
.........\TSPopoverTouchView.h
.........\TSPopoverTouchView.m
.........\UIBarButtonItem+WEPopover.h
.........\UIBarButtonItem+WEPopover.m
wry.dat

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