Update readme

README.md

@@ -5,7 +5,7 @@
   <a href="https://mp.weixin.qq.com/s?__biz=MzU4MDUxOTI5NA==&mid=2247484367&idx=1&sn=fcbc485f068dae5de9f68d52607ea08f&chksm=fd54d7deca235ec86249a9e3714ec18be8b2d6dc580cae19e4e5113533a6c5b44dfa5813c4c3&scene=0&subscene=131&clicktime=1551942425&ascene=7&devicetype=android-28&version=2700033b&nettype=ctnet&abtest_cookie=BAABAAoACwASABMABAAklx4AVpkeAMSZHgDWmR4AAAA%3D&lang=zh_CN&pass_ticket=1qvHqOsbLBHv3wwAcw577EHhNjg6EKXqTfnOiFbbbaw%3D&wx_header=1">中文介绍</a>
 </p>
 
-#Release Note
+# Release Note
 
 Please checkout the release note for the latest 0.1.50 to see changes [0.1.50 release note](https://github.com/alibaba/flutter_boost/releases)
 
@@ -150,7 +150,7 @@ public class MyApplication extends FlutterApplication {
     public void onCreate() {
         super.onCreate();
         FlutterBoostPlugin.init(new IPlatform() {
-        
+
         @Override
             public Application getApplication() {
                 return MyApplication.this;
@@ -183,7 +183,7 @@ public class MyApplication extends FlutterApplication {
             public int whenEngineStart() {
                 return ANY_ACTIVITY_CREATED;
             }
-        
+
         });
     }
 ```
@@ -264,7 +264,7 @@ Dart
 
 FlutterBoost.singleton
                 .open("pagename")
-                
+
 ```
 
 ## Use Flutter Boost to close a page in dart code.