fix(iOS): image._setColorTint is not a function fix
fix(iOS): image._setColorTint is not a function fix

closes https://github.com/NativeScript/NativeScript/issues/2647
closes https://github.com/NativeScript/nativescript-angular/issues/422
closes https://github.com/jlooper/pocketrave/issues/2
closes https://github.com/jlooper/pocketrave/issues/3

NativeScript/NativeScript,NativeScript/NativeScript,NativeScript/NativeScript,NativeScript/NativeScript,NativeScript/NativeScript