Merge pull request #1244 from benjchristensen/from-just

Observable.from(T) using Observable.just(T)

Author: benjchristensen

rxjava-core/src/main/java/rx/Observable.java

@@ -1084,10 +1084,8 @@ public final static <T> Observable<T> from(Iterable<? extends T> iterable, Sched
      * @return an Observable that emits the item
      * @see <a href="https://github.com/Netflix/RxJava/wiki/Creating-Observables#wiki-from">RxJava Wiki: from()</a>
      */
-    // suppress unchecked because we are using varargs inside the method
-    @SuppressWarnings("unchecked")
     public final static <T> Observable<T> from(T t1) {
-        return from(Arrays.asList(t1));
+        return just(t1);
     }
 
     /**