Attempt to test in Windows with Appveyor

appveyor.yml

@@ -0,0 +1,21 @@
+# Test against this version of Node.js
+environment:
+  nodejs_version: "5"
+
+# Install scripts. (runs after repo cloning)
+install:
+  # Get the latest stable version of Node.js or io.js
+  - ps: Install-Product node $env:nodejs_version
+  # install modules
+  - npm install
+
+# Post-install test scripts.
+test_script:
+  # Output useful info for debugging.
+  - node --version
+  - npm --version
+  # run tests
+  - npm test
+
+# Don't actually build.
+build: off

test/bin-readme.js

@@ -38,6 +38,7 @@ test('readme command', function (group) {
       var before = fs.readFileSync(path.join(d, 'README.md'), 'utf-8');
       documentation(['readme index.js --diff-only -s API'], {cwd: d}, function (err, stdout, stderr) {
         var after = fs.readFileSync(path.join(d, 'README.md'), 'utf-8');
+        t.equal(stderr, '');
         t.ok(err);
         t.notEqual(err.code, 0, 'exit nonzero');
         t.same(after, before, 'readme unchanged');