Update README.md

Author: johnsonlee

README.md

@@ -4,6 +4,24 @@ YQL SDK is a useful library to access YaHoo public services via YQL (Yahoo Query
 
 ## Usage
 
+### Maven
+
+```xml
+<dependency>
+    <groupId>com.sdklite.yql</groupId>
+    <artifactId>yql</artifactId>
+    <version>0.0.1</version>
+</dependency>
+```
+
+### Gradle
+
+```gradle
+compile 'com.sdklite.yql:yql:0.0.1'
+```
+
+### Example
+
 ```java
 final String YQL = "select * from weather.forecast where woeid in (select woeid from geo.places(1) where text=\"北京\") and u=\"c\"";
 
@@ -23,4 +41,4 @@ Yql.getInstance().query(YQL, new Yql.Callback<Yql.Result<Weather.Forecast>>() {
     }
 
 });
-```
+```