Merge pull request '小米便签代码精读注释' (#5) from dev into master

src/main/java/net/micode/notes/ui/NotesPreferenceActivity.java

@@ -387,7 +387,7 @@ public class NotesPreferenceActivity extends PreferenceActivity {
                 Intent intent = new Intent(this, NotesListActivity.class);
                 //开始创建活动
                 intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
-                startActivity(intent);
+                startActivity(intent);//开始活动
                 return true;
             default:
                 return false;//若出现错误则返回