Update README.md

Author: miguelbcr

README.md

@@ -89,6 +89,7 @@ RxPaparazzo.takeImage(activityOrFragment)
         .subscribeOn(Schedulers.io())
         .observeOn(AndroidSchedulers.mainThread())
         .subscribe(response -> {
+            // See response.resultCode() doc
             if (response.resultCode() != RESULT_OK) {
                 response.targetUI().showUserCanceled();
                 return;
@@ -110,6 +111,7 @@ RxPaparazzo.takeImage(activityOrFragment)
         .subscribeOn(Schedulers.io())
         .observeOn(AndroidSchedulers.mainThread())
         .subscribe(response -> {
+            // See response.resultCode() doc
             if (response.resultCode() != RESULT_OK) {
                 response.targetUI().showUserCanceled();
                 return;
@@ -128,6 +130,7 @@ RxPaparazzo.takeImages(activityOrFragment)
         .subscribeOn(Schedulers.io())
         .observeOn(AndroidSchedulers.mainThread())
         .subscribe(response -> {
+            // See response.resultCode() doc
             if (response.resultCode() != RESULT_OK) {
                 response.targetUI().showUserCanceled();
                 return;