title: Node-gyp cannot find msbuild.exe
body: <p>Hello I am on the processes of creating a native node module on windows, but whenever I ran the <code>node-gyp build binding.gyp</code> command I obtain an error that states 
  <code>"error: Can't find "msbuild.exe". Do you have Microsoft Visual Studio C++ 2008 installed?"</code>.
   I have Visual Studio 2013 installed and the msbuild directory is <code>C:\Windows\Microsoft.NET\Framework\v3.5\msbuild.exe.</code> I tried adding that to the PATH variable, and I am able to start a cmd prompt and run <code>msbuild.exe</code> and it will return the version so that seems to be working, but for some reason node-gyp cannot detect it, I even attempted to modify the build.js file within node-gyp to have it point to the msbuild location but it fails.</p>