Add workaround for iOS 8 image picker bug
Make possible to run Example app in Xcode6

Rerun `pod install` with the latest CocoaPods
Put CocoaPods into Gemfile
Remove all pods added for testing because they were not actually used.
Upgrade test target to use XCTest instead of SenTesting
Refactor: `isOS7` -> `isOS7OrHigher`
Use `preferredContentSize` on iOS7 and above
Alert user if no Camera access on iOS8
Merge #15
Bump podspec version to 1.2.3
Merge commit '884026f75bf7fc4b4dea4177a713cc76f30330f3'

Conflicts:
	CZPhotoPickerController.podspec
	CZPhotoPickerController/CZPhotoPickerController.m
version number bump