diff --git a/.travis.yml b/.travis.yml
index 4efbda3825..bb0580bdbe 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,9 +5,12 @@ deploy:
   provider: releases
   api_key:
     secure: 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
-  file: HMCL/build/libs/HMCL-2.4.0.233.jar
+  file:
+  - HMCL/build/libs/HMCL-2.4.0.233.jar
+  - HMCL/build/libs/HMCL-2.4.0.233.exe
   on:
     repo: huanghongxun/HMCL
+  skip_cleanup: true
 install: echo "skip 'gradle assemble' step"
 script: gradle build --continue
 before_cache:
diff --git a/README.md b/README.md
index e6b3101cb8..c8c549a90d 100755
--- a/README.md
+++ b/README.md
@@ -1,9 +1,24 @@
 # Hello Minecraft! Launcher [![Build Status](https://travis-ci.org/huanghongxun/HMCL.svg?branch=master)](https://travis-ci.org/huanghongxun/HMCL)
-Hello Minecraft! Launcher is a Minecraft launcher.
 License is GPL v3, see http://www.gnu.org/licenses/gpl.html
 
-### Joining
+## Introduction
+
+This application is a Minecraft launcher that supports mod management, game modification, auto-installing Minecraft/Forge/LiteLoader/OptiFine, modpack manufacture, UI theme customization, and so on.
+
+This application has more than 100,000 users and would be opened more than 500,000 times per day.
+
+But the code of this app is not strong, I hope someone could join the development of this app and make this app stronger.
+
+
+## Contribution
 If you really want to join the development, here's some requests.
-* The Development Environment is Netbeans 8.0.2 with Gradle Support plugin.
-* The project is built on Java 1.8, using the retrolambda backported to Java 1.7. So DO NOT use the libraries of Java 8 like Stream APIs.
-* DO NOT modify *.gradle.
+* The Development Environment is Netbeans 8.0.2 with plugin: Gradle Support.
+* The project is built on Java 1.8 using the retrolambda backporting to Java 1.7. So DO NOT use the libraries of Java 8 like Stream APIs.
+* DO NOT modify any file whose suffix is `gradle`.
+
+## Code tree
+* Package `hmc.util` contains all the utilities that HMCL and HMCSM depend on.
+* Package `hmc.launcher` contains HMCL ui, a few utility codes.
+* Package `hmc.launcher.core` contains all the Minecraft Launcher logic that the HMCL supports.
+* Package `hmc.svrmgr` contains all HMCSM logic.
+* Folder `HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/lang` contains all the localization files that HMCL and HMCSM used. If you are good at translation, you could join the localization plan by opening a pull request.