Fixing collision with netflix-core library.

Author: nietsnie

src/main/java/io/jmnarloch/spring/boot/rxjava/config/RxJavaMvcAutoConfiguration.java

@@ -46,15 +46,15 @@ public class RxJavaMvcAutoConfiguration {
     @RxJava
     @ConditionalOnMissingBean
     @ConditionalOnClass(Observable.class)
-    public ObservableReturnValueHandler observableReturnValueHandler() {
+    public ObservableReturnValueHandler rx2observableReturnValueHandler() {
         return new ObservableReturnValueHandler();
     }
 
     @Bean
     @RxJava
     @ConditionalOnMissingBean
     @ConditionalOnClass(Single.class)
-    public SingleReturnValueHandler singleReturnValueHandler() {
+    public SingleReturnValueHandler rx2singleReturnValueHandler() {
         return new SingleReturnValueHandler();
     }