Remove warnings about Xcode 5.0.1 in the documentation [skip ci]

Subliminal is now compatible with Xcode 5.0.1 and this warnings are
outdated. Let’s remove them from README.md.
Document issue about swiping table view cell [skip ci]

In prior versions of iOS, UITableViewCell instances used a discrete
swipe gesture recognizer to implement the ‘swipe-to-delete’ behavior
and show the deletion confirmation button.

With iOS 7 the internal view hierarchy of a cell has been modified:
a scroll view has been inserted between the UITableViewCell and the
content view. It is responsible for tracking the swiping gesture and
set the inset for the whole content view.

Since Subliminal cannot drag scroll views in the iOS 7 Simulator for
the time being, it cannot swipe a table view cell either. Let’s add
this as a known issue in README.md.
Merge pull request #115 from inkling/nanouk/update-readme

Update Subliminal documentation
Get the path for the deepest matching element

We usually want to grab the path for the deepest (leaf) matching object
in the tree; this is especially true in iOS 7 since Apple changed
the accessibility hierarchy and inserted intermediate views or
accessibility elements in between.

Let’s modify `-rawAccessibilityPathToElement:favoringSubviews:` to
search for the deepest matching object instead of return the first the
method encounters.
Merge pull request #116 from inkling/nanouk/search-for-leaf

Get the path for the deepest matching element
Fix boolean checks in `subliminal-test`.

$ENABLE will evaluate to true if ENABLE is not set.
`subliminal-test` always logs that it is preparing to install the app.

Whether in the simulator _or_ on the device.
Enforce that `subliminal-test` will always use the latest simulator if no SDK is specified.

`instruments`' behavior varies across SDK versions, as described in
http://openradar.appspot.com/radar?id=3107401, but we had previously
documented that `subliminal-test` would use the latest version if no SDK
was specified.

We no longer mention modifying the `/etc/authorization` workaround
for authorizing instruments, because even if that worked, it wouldn't be
sufficient to allow the user to avoid specifying their login password or using
the `--live` option: we need authorization to enforce a consistent SDK.
Adjust a device type for Xcode 5.x.
Merge the various simulator scripts into `simulator-set`.

To eliminate redundant logic and simulator restarts, and simplify the CI setup.
When resetting the simulator, remove all support directories for a given SDK version.
Remove `enable_GUI_scripting.scpt`.

Its logic has been incorporated into `authorize_instruments.scpt`,
which was the only script which needed it anymore.
Merge pull request #117 from inkling/jeff/CI_cleanup

CI fixes and refactoring.
Update README.md
Merge pull request #119 from raven/patch-1

Update README.md
Wait longer for Instruments to launch when retrying

Subliminal script originally waits 30 seconds when launching
Instruments and the app. If nothing has been written after these 30
seconds, the Simulator is killed and it tries it all again — if the
retry count limit has not yet been reached.

In older machines, 30 seconds may not be enough for Instruments and the
app to launch. Let’s implement a sort of exponential fall back and
increase the timeout duration after each try: 30 seconds, 45 seconds, 1
minutes and then 2 minutes.
Insert a blank line after the "GUI is not authorized" alert message
Merge pull request #120 from inkling/nanouk/wait-longer-instruments-launch

Increase timeout duration for Instruments to launch
Revert "Instruments needs a username as well, apparently"

This reverts commit bbc500bc686d798b682bac4c60cbac320c59abb5.
Merge remote-tracking branch 'upstream/master' into HEAD