title: How to cancel request with retofit2 and RxAndroid
body: <p>I am using Retrofit 2.0 and Rx-android to load my APIs. I follow the section <code>RxJava Integration with CallAdapter</code> at <a href="http://inthecheesefactory.com/blog/retrofit-2.0/en" rel="noreferrer">this site</a> and it work fine. But, I don't know how to cancel a loading request with the observable object. Please help to give me an idea.</p>