added that the xcode version can be selected: issue #6
Merge branch 'master' into develop

Conflicts:
	plugin/build.gradle
increased version number
changed that the xcrun is also picked from the selected xcode: issue #6
added the the xcodebuild.version can be passed with -P
fixed that the version can be set: issue #82
fixed that when xcode 5 is selected via version parameter that the simulators are found
fixed that no exception is raised when the outputParamter is null
changed that the test does not fail
pumped version to 0.9.13