Use screencap bin

Use Host GPU must not be checked or the screenshot will be grey.
Fix acceptAlert on iOS 7
Merge pull request #1270 from bootstraponline/screencap_bin

Use screencap bin
Merge pull request #1273 from bootstraponline/ios7_accept_alert

Fix acceptAlert on iOS 7
Fix spacing
Merge pull request #1274 from appium/ios7_accept_alert

Fix spacing
iOs -> iOS
Remove checkMissingParams when defaults are set
Merge pull request #1276 from bootstraponline/master

Remove checkMissingParams when defaults are set
Implemented pinch in/out on Android.
Merge pull request #1265 from paymand/android_pinch

Implemented pinch in/out on Android.
remove npm deps on hardcore reset
make sure debug transactions is on (fix #1281)
Merge pull request #1282 from jlipps/master

turn on debug transactions for instruments
Updated unlock_apk submodule ref: now supports Samsung S3 and Samsung Galaxy Note2. Tested as well on Nexus 4 devices as well as 2.3.3, 4.0.3, 4.1.2, 4.2.2 and 4.3 emulators.
Merge pull request #1284 from filmaj/unlock_apk-update

Updated unlock_apk submodule
don't unfreezerotation, it actually cancels the rotation (fix #1280)
Merge pull request #1286 from jlipps/master

don't unfreezerotation, it actually cancels the rotation (fix #1280)
enable authorize on mavericks
Merge pull request #1290 from jlipps/master

enable authorize on mavericks