Fix default index

src/index.js

@@ -41,7 +41,7 @@ module.exports = function(object, filename) {
   if (fs.existsSync(process.cwd() + '/public')) {
     server.use(serveStatic(process.cwd() + '/public'));
   } else {
-    server.use(serveStatic(path.join(__dirname, './public')));
+    server.use(serveStatic(__dirname + '/public'));
   }
 
   server.use(cors({ origin: true, credentials: true }))
@@ -66,4 +66,4 @@ module.exports = function(object, filename) {
   }
 
   return server
-}
+}

test/index.js

@@ -253,7 +253,7 @@ describe('Server', function() {
       it('should respond with html', function(done) {
         request(server)
           .get('/')
-          .expect('Content-Type', /html/)
+          .expect(/You're successfully running JSON Server/)
           .expect(200, done);
       });
     });