feature: added ofxiOSGetDeviceInfo which returns an object which contains type, device string and major and minor versions of the device. Relates to #2872
Merge pull request #2962 from openframeworks/feature_ios_device

ofxiOSGetDeviceInfo for querying device type and major / minor versions.
Merge branch 'master' of https://github.com/openframeworks/openFrameworks.git into rexgo