Using dub and rdmd together?

[Matthew OConnor]

Hi, I'm new to D and trying to make some command line tools that 
are run with `#!/usr/bin/env rdmd`. But I would also like to 
reference external packages from dub. I know I can do this with:


     #!/usr/bin/env dub
     /+ dub.sdl:
       name "get"
       dependency "requests" version="~>0.3.2"
     +/

But when I run it (with `dub get.d` on Windows), it rebuilds 
every time.

Is there a way to integrate the two so that `rdmd` is used for 
the builds, but `dub` is used to download the necessary packages?

Thanks,
Matthew