Merge pull request #1010 from sveltejs/windows-sanity-check

check files with names like [foo].html work on windows

test/server-side-rendering/samples/sanitize-name/main.html

@@ -1,7 +1,7 @@
 <Foo/>
 
 <script>
-	import Foo from './@foo.html';
+	import Foo from './[foo].html';
 
 	export default {
 		components: { Foo }