docs(readme): update title and summary

Author: simpleton

README.md

@@ -1,9 +1,8 @@
-# tinkerpatch-easy-sample
+# tinkerpatch-rxjava2-sample
 
-[![Build Status](https://travis-ci.org/TinkerPatch/tinkerpatch-easy-sample.svg?branch=master)](https://travis-ci.org/TinkerPatch/tinkerpatch-easy-sample)
 [ ![Download](https://api.bintray.com/packages/simsun/maven/tinkerpatch-android-sdk/images/download.svg) ](https://bintray.com/simsun/maven/tinkerpatch-android-sdk/_latestVersion)
 [![Join Slack](https://slack.tinkerpatch.com/badge.svg)](https://slack.tinkerpatch.com)
 
-无需修改自己App代码，一键接入的Sample
+TinkerPatch和Rxjava2结合的例子
 
 [相关文档](http://tinkerpatch.com/Docs/intro)