Example from readme doesn't work

I've just found this project and decided to try it out by copying the example provided in the readme. On doing so I found some issues, although since I'm not familiar with the project it may be my fault.

- The `ClassBuilder.AddConstructor` method returns a `ConstructorBuilder` which doesn't contain an `AddProperty` method. \
This requires using the `Class` property to go back to the `ClassBuilder`. \
Alternatively, maybe `ConstructorBuilder` could add the `AddProperty` method so the example just works. It seems other builders follow this pattern (e.g.: `ClassBuilder.AddNamespaceImport`).
- The `ClassConstructor.AddProperty` method doesn't have an overload that takes the type of the property. \
This requires using the `PropertyBuilder.SetType` method.
However, specifying the type of the property is required so I feel like it would be better to add a parameter[^1] to the `AddProperty` method which would make the example work.
- The generated output doesn't include the accessibility modifiers since they weren't specified. \
I suggest adding the accessibility modifiers to the example or modifying the output in the readme to match the generated output.
- The generated output always adds the namespace in the `SomeOtherType` parameter and property, but the output in the readme doesn't include it. \
If this is intentional, I think the output in the readme should be modified to match the generated output.
- The generated output declares the properties in reverse order, unlike what's being shown in the readme. \
Should the property order be respected or is this intentional?

I'm willing to make a PR with the changes needed to fix this issue, let me know what would be the preferred way to resolve it.

[^1]: It can be a new overload to preserve binary compatibility, not sure how important that is for this project.