update readme

Author: 988uhuj

README.md

@@ -11,8 +11,11 @@ The sample app: [click me](https://github.com/chenupt/SpringIndicator/raw/master
 ---
 Add the dependency to your build.gradle.
 ```
+maven {
+    url "https://oss.sonatype.org/content/repositories/snapshots/"
+}
 dependencies {
-    compile 'com.github.chenupt.android:springindicator:1.0.0-SNAPSHOT@aar'
+    compile 'com.github.chenupt.android:springindicator:1.0.1-SNAPSHOT@aar'
 }
 ```
 Add the indicator to your layout.