Allow multiple input files

[nettnikl]

I have two files A+B, both importing a third file C, including base types.

When i create the models.go from A and B, i get a lot of duplicates. I appreciate that the auto import includes C, but currently this approach does not properly work for me. Can we adjust the code to either:

1. allow to output each type to the a .go file named after the source .xsd file.
2. allow to output each type to the a dedicated .go file, named after the GoName() of the struct.
3. allow to specify multiple files as input.

3 would be preferred, 1+2 would allow to work around by copying files around.

Br!