[new] 完善readme

readme.md

  #### 怎么上传maven 
  
-
-
-for Gradle version >= 2.1:
-
-        plugins {
-          id "com.whl.gradle-publish-plugin" version "0.1.16-SNAPSHOT"
-        }
-
-
-for Gradle version < 2.1 or where dynamic configuration is required:
-
+项目的根build.gradle
+````
         buildscript {
           repositories {
             maven {
@@ -24,17 +15,16 @@ for Gradle version < 2.1 or where dynamic configuration is required:
 
         apply plugin: "com.whl.gradle-publish-plugin"
 
-Also see it in [Gradle plugins](https://plugins.gradle.org/plugin/com.whl.gradle-publish-plugin)
-
-then, configuration in your build.gradle，such as:
-
+````
+module 的build.gradle
+```
 complete example:
-
-        group 'com.example'
-        version '1.0-SNAPSHOT'
+        apply plugin: "com.whl.gradle-publish-plugin"
+        group 'groupdId'
+        version 'version' // note :以-SNAPSHOT 可以同版本覆盖 
 
       
-gradlePublish {
+        gradlePublish {
         
             sourceJarEnabled = true
             javaDocEnabled = false
@@ -52,8 +42,8 @@ gradlePublish {
                 password = "caihong520"
             }
         
-}
-
+        }
+````
 
 
 last, execute `./gradlew publish` or `./gradlew :library:publish` task to publish your library to specified maven repository