diff --git a/README.md b/README.md
index b4cf290..dbd44a6 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,35 @@
 # webp-imageio-core
 forked from qwong/j-webp
-Java Image I/O reader and writer for the Google WebP image format.
+Java Image I/O reader and writer for the Google WebP image format without system lib file.
 
-基于[webp project of Luciad](https://bitbucket.org/luciad/webp-imageio) 0.4.2版本修改.
+In source program, coders need to put native lib files like .so/.dll/.dylib into the folder of `java.library.path`.
 
-实际上只修改了`com.luciad.imageio.webp.WebP.loadNativeLibrary`这一个方法.  
-因为按他默认的加载方式, 需要把native的so/dll/dylib等文件放到OS对应的`java.library.path`对应的目录才能加载到, 这会给部署带来一些不便.
+For easier to use, qwong/j-webp (bases on [webp project of Luciad](https://bitbucket.org/luciad/webp-imageio) 0.4.2) import [native-lib-loader](https://github.com/scijava/native-lib-loader) to load native lib files from project resource folder,   instead of `java.library.path`. (more details to see `com.luciad.imageio.webp.WebP.loadNativeLibrary`)
 
-所以我们这里换成了[native-lib-loader](https://github.com/scijava/native-lib-loader)自动加载, 编译构建好的包里已经包含了各种OS上的native文件, 使用时会自动加载.
+However, coders pefer using jar package instead of source java code in personal project. So I fork and edit qwong/j-webp to privide a usable jar. It is a fat jar includes dependencies and native lib file (includes windows/linux/mac both 32&64bit).
 
-具体使用方法可参看`src/main/java/example`下的源码.
+## Usage
+
+Because it is not in maven repo,  so you have to put the jar file `webp-imageio-core-{version}.jar` into libs folder of your project manually.
+
+if you use gradle, you can put it into `src/main/resource/libs`, and edit config file`build.gradle` to add local dependencies
+
+```groovy
+dependencies {
+    compile fileTree(dir:'src/main/resources/libs',include:['*.jar'])
+}
+```
+
+if you use maven, you can put it `${project.basedir}/libs`, and edit config file `pom.xml` to add local dependencies
+
+```xml
+<dependency>  
+    <groupId>com.github.nintha</groupId>  
+    <artifactId>webp-imageio-core</artifactId>  
+    <version>{versoin}</version>  
+    <scope>system</scope>  
+    <systemPath>${project.basedir}/libs/webp-imageio-core-{version}.jar</systemPath>  
+</dependency>
+```
+
+The usage of api, you can see example cases in `src/main/java/example`.
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index dcbafff..f9aa8ab 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,9 +4,9 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
-    <groupId>net.wangq</groupId>
-    <artifactId>webp</artifactId>
-    <version>1.0-SNAPSHOT</version>
+    <groupId>com.github.nintha</groupId>
+    <artifactId>webp-imageio-core</artifactId>
+    <version>0.1.0</version>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -22,4 +22,33 @@
         </dependency>
     </dependencies>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>2.3</version>
+                <configuration>
+                    <createDependencyReducedPom>false</createDependencyReducedPom>
+                </configuration>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                        <configuration>
+                            <transformers>
+                                <transformer
+                                        implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                    <mainClass>util.Microseer</mainClass>
+                                </transformer>
+                            </transformers>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
 </project>
\ No newline at end of file
diff --git a/src/main/java/example/DecodingTest.java b/src/main/java/example/DecodeTest.java
similarity index 97%
rename from src/main/java/example/DecodingTest.java
rename to src/main/java/example/DecodeTest.java
index 82b2466..54050a2 100644
--- a/src/main/java/example/DecodingTest.java
+++ b/src/main/java/example/DecodeTest.java
@@ -9,8 +9,7 @@ import java.awt.image.BufferedImage;
 import java.io.File;
 import java.io.IOException;
 
-public class DecodingTest {
-
+public class DecodeTest {
     public static void main(String args[]) throws IOException {
         String inputWebpPath = "test_pic/test.webp";
         String outputJpgPath = "test_pic/test_.jpg";
diff --git a/src/main/java/example/EncodingTest.java b/src/main/java/example/EncodeTest.java
similarity index 97%
rename from src/main/java/example/EncodingTest.java
rename to src/main/java/example/EncodeTest.java
index facad6d..699bf19 100644
--- a/src/main/java/example/EncodingTest.java
+++ b/src/main/java/example/EncodeTest.java
@@ -10,8 +10,7 @@ import java.awt.image.BufferedImage;
 import java.io.File;
 import java.io.IOException;
 
-public class EncodingTest {
-
+public class EncodeTest {
     public static void main(String args[]) throws IOException {
         String inputPngPath = "test_pic/test.png";
         String inputJpgPath = "test_pic/test.jpg";