basic appveyor ci

[kkirstein]

This contains a basic appveyor integration:

• configuration is completely done with appveyor.yml (no GUI setup)
• a binary verson of hdf5.dll is downloaded from GitHub
• builds for rust 1.1 & nightly are checked

Todos:

• add build of hdf5 lib (needs cmake & MinGW)
• add 32bit build (?)
• add *-msvc target of rust

You have to setup a project on appveyor for your repo and change the link of the build status badge in Readme for this to work in your repo.

[andreabedini]

my 2c on the README: it makes total sense of HDF people to use MSVC on Windows rather than mingw. Actually Rust is supposed to work with MSVC too and they are going to get there soon see e.g. rust-lang/rfcs#1061.

edit: ... and great work everyone!

[aldanor]

@kkirstein This is great, thanks a lot! I will try to set up the appveyor repo tonight and then merge this in.

Could you please squash this PR?

[aldanor]

@andreabedini we have already discussed this in #4 :) It would be best to support both mingw and msvc once it's out of course.

[andreabedini]

@aldanor sorry, I have been out of the loop :)

[kkirstein]

@aldanor I will try to squash this PR, so you don't see all my flaws (I'm not an Git-expert and already merged my branch, but it should be possible anyway..).
@andreabedini mcvs target is already on my todo list, but with low prio. I should give it fast try.

[kkirstein]

@aldanor There is another PR with a squashed commit from my appveyor branch.

[aldanor]

Closed in favor of #7.

[aldanor]

@kkirstein You could have just git push --force so you wouldn't have to create a new PR, I think :)