Fix scrolling in table view cells
Guard against using iOS 8 APIs in Xcode < 6
Fix the resolution of screenshots taken after errors. (320x* => 640x*)

The last parameter is the scale: "The scale factor to apply to the bitmap. If you specify a value of 0.0,
the scale factor is set to the scale factor of the device’s main
screen."

See:
https://developer.apple.com/library/ios/documentation/uikit/reference/uikitfunctionreference/index.html#//apple_ref/c/func/UIGraphicsBeginImageContextWithOptions
fix hidden check to use also alpha value
Note support of iOS 8 in README
Merge pull request #469 from percysnoodle/table-cell-scroll-fix

Fix scrolling in table view cells
Merge pull request #490 from Sipeso/master

adding the method waitForAnimationsFinishedForTimeInterval:
Merge pull request #499 from jacobrelkin/jacobrelkin/make-xcode-5-happy

Guard against using iOS 8 APIs in Xcode < 6
Merge pull request #509 from hdwr/fix_screenshot_scale

Fix the resolution of screenshots taken after errors. (320x* => 640x*)
Merge pull request #517 from joemasilotti/patch-1

Note support of iOS 8 in README
Only link UIAutomation framework when needed
Only allow -acknowledgeSystemAlert in simulator
Fix documentation bug
Merge pull request #520 from joemasilotti/uiautomation-fix

Restore on device testing
Merge pull request #522 from justinseanmartin/jmartin/fix-documentation-bug

Fix documentation bug
Merge pull request #516 from ivan-golub/advanced_hidden_check

Extend hidden check to use also alpha value
Bump to 3.1
Backfill (local/remote) notification test
Run CI against iOS 7.1 and 8.1
Only register for notification if supported - iOS8