Update README.md

README.md

@@ -1,6 +1,27 @@
-# Banner
+# Banner [![](https://jitpack.io/v/Brioal/Banner.svg)](https://jitpack.io/#Brioal/Banner)
 仿知乎日报首页轮播图
 效果对比演示
 
 ![](https://github.com/Brioal/Banner/blob/master/art/1.gif)|![](https://github.com/Brioal/Banner/blob/master/art/2.gif)
 
+#usage
+##Step 1. Add the JitPack repository to your build file
+
+###Add it in your root build.gradle at the end of repositories:
+```
+
+	allprojects {
+		repositories {
+			...
+			maven { url "https://jitpack.io" }
+		}
+	}
+	
+```
+##Step 2. Add the dependency
+```
+	dependencies {
+	        compile 'com.github.Brioal:Banner:1.0'
+	}
+	
+```