Merge pull request #85 from Papercloud/master

iOS7 respondsToSelector checks
Combined a presenting animation with `setTintAdjustmentMode` & `overlayview`.

The background overlay and button dimming animation was animated after presenting or dismissing animtation.
Fixed two step animations to just one step.
fixed a bug #89: `presentPopoverAsDialogAnimated:` does not show any popover.
Merge pull request #100 from ksjun/fix-dialog

fixed a bug #89: `presentPopoverAsDialogAnimated:` does not show any popover.
Merge pull request #98 from ksjun/fix-animation

Combined a presenting animation with `setTintAdjustmentMode` & `overlayview`
Adding ignore orientation
Fixing orientation discovery in position popover
Pop Up Orientation Fix

Allow for pop up to be properly oriented when displayed.
Origin of Popup in iOS 8

Allowed for popup to appear at proper origin in iOS 8
Merge pull request #1 from RayzorDragon/fix-iOS8-orientation-handling

Pop Up Orientation Fix
Autoresizing overlay view
Fixing evaluation of status bar height
Bumping podfile version for clarity
Avoid registering observers more than once to fix possible crash
Merge pull request #2 from vitalys/fix-iOS8-orientation-handling

Avoid registering observers more than once to fix possible crash