Update the example app to add setEnableReactionTooltip method

Author: AmrDeveloper

app/src/main/java/com/amrdeveloper/reactbuttonlibrary/MainActivity.java

@@ -20,6 +20,7 @@ protected void onCreate(Bundle savedInstanceState) {
         final ReactButton reactButton = findViewById(R.id.reactButton);
         reactButton.setReactions(FbReactions.reactions);
         reactButton.setDefaultReaction(FbReactions.defaultReact);
+        reactButton.setEnableReactionTooltip(true);
 
         reactButton.setOnReactionChangeListener(new ReactButton.OnReactionChangeListener() {
             @Override

app/src/main/res/layout/activity_main.xml

@@ -8,5 +8,7 @@
         android:id="@+id/reactButton"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_centerHorizontal="true"
+        android:layout_centerVertical="true"
         android:textAllCaps="false" />
 </RelativeLayout>