Allow specifying files via $min_symlinks paths

If you have an alias/symlink like "//~name" => "/full/path", then you can
now serve with the more logical URL http://example.com/min/?f=~name/foo.css

Fixes #137

index.php

@@ -52,6 +52,7 @@ $server = new Minify($cache);
 // TODO probably should do this elsewhere...
 $min_serveOptions['minifierOptions']['text/css']['docRoot'] = $env->getDocRoot();
 $min_serveOptions['minifierOptions']['text/css']['symlinks'] = $min_symlinks;
+$min_serveOptions['minApp']['symlinks'] = $min_symlinks;
 // auto-add targets to allowDirs
 foreach ($min_symlinks as $uri => $target) {
     $min_serveOptions['minApp']['allowDirs'][] = $target;