diff --git a/HMCL/build.gradle b/HMCL/build.gradle
index 0d6afbb63..3d8ff4353 100755
--- a/HMCL/build.gradle
+++ b/HMCL/build.gradle
@@ -46,11 +46,11 @@ def buildnumber = System.getenv("TRAVIS_BUILD_NUMBER")
 if (buildnumber == null)
     buildnumber = System.getenv("BUILD_NUMBER")
 if (buildnumber == null)
-    buildnumber = "1"
+    buildnumber = "0"
     
 def versionroot = System.getenv("VERSION_ROOT")
 if (versionroot == null)
-    versionroot = "2.7.1"
+    versionroot = "2.7.2"
 
 String mavenGroupId = 'HMCL'
 String mavenVersion = versionroot + '.' + buildnumber
diff --git a/HMCLCore/src/main/resources/org/jackhuang/hmcl/lang/I18N_zh.lang b/HMCLCore/src/main/resources/org/jackhuang/hmcl/lang/I18N_zh.lang
index ac6251b88..20af6a9de 100644
--- a/HMCLCore/src/main/resources/org/jackhuang/hmcl/lang/I18N_zh.lang
+++ b/HMCLCore/src/main/resources/org/jackhuang/hmcl/lang/I18N_zh.lang
@@ -291,6 +291,7 @@ advancedsettings.launcher_visibility.keep=保持啟動器可見
 advancedsettings.game_dir.default=預設(.minecraft/)
 advancedsettings.game_dir.independent=各版本獨立(.minecraft/versions/<版本名>/,除assets,libraries)
 advancedsettings.no_jvm_args=不添加預設的JVM參數(使用Java9時必勾)
+advancedsettings.no_common=不使用公共路徑
 advancedsettings.java_args_default=啟動器預設添加的參數（請不要重複添加）：-XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -XX:MaxPermSize=???m -Xmx???m -Dfml. ignoreInvalidMinecraftCertificates=true -Dfml.ignorePatchDiscrepancies=true
 advancedsettings.wrapper_launcher=前置指令(不必填寫,如optirun)
 advancedsettings.precall_command=啟動前執行命令(不必填寫,將在遊戲啟動前調用)
diff --git a/HMCLCore/src/main/resources/org/jackhuang/hmcl/lang/I18N_zh.properties b/HMCLCore/src/main/resources/org/jackhuang/hmcl/lang/I18N_zh.properties
index 59fdf6b95..9633578a4 100644
--- a/HMCLCore/src/main/resources/org/jackhuang/hmcl/lang/I18N_zh.properties
+++ b/HMCLCore/src/main/resources/org/jackhuang/hmcl/lang/I18N_zh.properties
@@ -291,6 +291,7 @@ advancedsettings.launcher_visibility.keep=\u4fdd\u6301\u555f\u52d5\u5668\u53ef\u
 advancedsettings.game_dir.default=\u9810\u8a2d(.minecraft/)
 advancedsettings.game_dir.independent=\u5404\u7248\u672c\u7368\u7acb(.minecraft/versions/<\u7248\u672c\u540d>/,\u9664assets,libraries)
 advancedsettings.no_jvm_args=\u4e0d\u6dfb\u52a0\u9810\u8a2d\u7684JVM\u53c3\u6578(\u4f7f\u7528Java9\u6642\u5fc5\u52fe)
+advancedsettings.no_common=\u4e0d\u4f7f\u7528\u516c\u5171\u8def\u5f91
 advancedsettings.java_args_default=\u555f\u52d5\u5668\u9810\u8a2d\u6dfb\u52a0\u7684\u53c3\u6578\uff08\u8acb\u4e0d\u8981\u91cd\u8907\u6dfb\u52a0\uff09\uff1a-XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -XX:MaxPermSize=???m -Xmx???m -Dfml. ignoreInvalidMinecraftCertificates=true -Dfml.ignorePatchDiscrepancies=true
 advancedsettings.wrapper_launcher=\u524d\u7f6e\u6307\u4ee4(\u4e0d\u5fc5\u586b\u5beb,\u5982optirun)
 advancedsettings.precall_command=\u555f\u52d5\u524d\u57f7\u884c\u547d\u4ee4(\u4e0d\u5fc5\u586b\u5beb,\u5c07\u5728\u904a\u6232\u555f\u52d5\u524d\u8abf\u7528)
diff --git a/README.md b/README.md
index 49138745c..15764cc45 100755
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # Hello Minecraft! Launcher [![Build Status](https://travis-ci.org/huanghongxun/HMCL.svg?branch=master)](https://travis-ci.org/huanghongxun/HMCL)
-开源协议为GPL v3, 详情参见http://www.gnu.org/licenses/gpl.html
+GPL v3, see http://www.gnu.org/licenses/gpl.html
 
 ## Introduction
 
@@ -12,15 +12,47 @@ If you want to submit a pull request, there're some requirements:
 * Do NOT modify `gradle` files.
 
 ## Code
-* package `org.jackhuang.hellominecraft.util`: HMCL development utilities.
-* package `org.jackhuang.hellominecraft.launcher`: HMCL UI core.
-* package `org.jackhuang.hellominecraft.launcher.core`: HMCL game launcher core.
-* package `org.jackhuang.hellominecraft.launcher.api`: Nothing here!
-* package `org.jackhuang.hellominecraft.svrmgr`: All HMCSM codes.
-* Folder `HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang` contains language files.
+* package `HMCLCore/org.jackhuang.hmcl.util`: HMCL development utilities.
+* package `HMCL/org.jackhuang.hmcl`: HMCL UI core.
+* package `HMCLCore/org.jackhuang.hmcl.core`: HMCL game launcher core.
+* package `HMCLAPI(HMCL)/org.jackhuang.hmcl.api`: HMCL API, see API section.
+* Folder `HMCLCore/src/main/resources/org/jackhuang/hmcl/lang` contains language files.
 
 ## Pay Attention
-* When you do decide to modify this app, please and you MUST delete `org.jackhuang.hellominecraft.launcher.util.CrashReporter`, or errors your code cause will be sent to my server.
-* package `org.jackhuang.hellominecraft.util.logging`: repackaged Apache Log4j, Apache License 2.0.
+* When you do decide to modify this app, please and you MUST delete `HMCL/org.jackhuang.hmcl.util.CrashReporter`, or errors your code cause will be sent to my server.
+* package `org.jackhuang.hmcl.util.logging`: repackaged Apache Log4j, Apache License 2.0.
 * package `com.google.gson`: Apache License 2.0
-* package `org.jackhuang.hellominecraft.lookandfeel.ui`: contains some NimbusLAF's code belonging to Sun Microsystems under LGPL.
\ No newline at end of file
+* package `org.jackhuang.hmcl.laf.ui`: contains some NimbusLAF's code belonging to Sun Microsystems under LGPL.
+
+## API
+HMCLAPI is based on Event bus. There are all events below.
+* org.jackhuang.hmcl.api.event
+ - OutOfDateEvent - you can cancel checking new versions and upgrading by this event.
+* org.jackhuang.hmcl.api.event.config
+ - AuthenticatorChangedEvent
+ - DownloadTypeChangedEvent
+ - ThemeChangedEvent
+* org.jackhuang.hmcl.api.event.launch
+ - DecompressLibrariesEvent
+ - DownloadLibrariesEvent
+ - LaunchEvent
+ - LaunchSucceededEvent
+ - LaunchingStateChangedEvent
+ - ProcessingLaunchOptionsEvent
+ - ProcessingLoginResultEvent
+* org.jackhuang.hmcl.api.event.process
+ - JVMLaunchFailedEvent
+ - JavaProcessExitedAbnormallyEvent
+ - JavaProcessStartingEvent
+ - JavaProcessStoppedEvent
+* org.jackhuang.hmcl.api.event.version
+ - LoadedOneVersionEvent
+ - RefreshedVersionsEvent
+ - RefreshingVersionsEvent
+
+You can also add tabs to root window or add authenticators through IPlugin.
+
+### Remember
+* A valid plugin will have a main class that implements `org.jackhuang.hmcl.api.IPlugin`. HMCL will search all jar files in `plugins` folder and load classes that implements IPlugin.
+* If you want to debug, use option: `--plugin=<Your IPlugin Class Name>` and add your jar to classpath.
+* You'd better only access `org.jackhuang.hmcl.api.*`, and other classes may change in different versions.