Fix issue with ReflectionParameter (fixes #14)

[starvsion]

The original code

$constructorParameters[] = $parameter->getType()->getName() == 'int' ? 'integer' : $parameter->getType()->getName();

has error because not all $parameter has a getType method (which are PHP's native types, such as int, bool etc.); this fixes it, by looping it thru, and it does not have getType, it will just take it from givenParameters; this is fine, because native PHP types are very flexible, and it will not cause error ( passing 3 as int, string or bool doesn't cause error )

[introwit]

Thank you so much for the contribution @starvsion 🙂 I have added credits to you in the changelog and the release 😄