Please add support for Windows in 32, 64bit versions

[duytrung]

Hi,

I found that the program is interesting but not support windows in download sections. Please add the binaries for Windows.

Thanks

[akiyosi]

There is Gonvim v0.2.1 x64 release but there is no 32bit release.

Gonvim v0.2.2 has no Windows release. Because golang/go#20982 needs to be solved.