readme changes

Author: ppamorim

README.md

@@ -10,6 +10,8 @@ Using the ViewDragHelper class, it is possible to create smooth animations that
 
 This new component has been created using some concepts described on [Flavien Laurent Blog][1] and [Denevell Blog][2].
 
+Dragger now uses Rebound from Facebook to provide more realistic animations and improve performance for old devices.
+
 This library should work on API 10 (but not tested yet).
 
 ![Demo 1][11]
@@ -108,7 +110,7 @@ repositories {
 }
 
 dependencies {
-  compile 'com.github.ppamorim:dragger:1.0.5.2'
+  compile 'com.github.ppamorim:dragger:1.1'
 }
 ```
 
@@ -150,6 +152,7 @@ Contributors
 * [Falkirks][12]
 
 This was only possible because [Pedro Vicente Gómez Sánchez][4] helped me and I am very grateful for that! Thank you. :)
+And thank you Facebook for provide Rebound library!
 
 Developed By
 ------------

app/res/layout/toolbar.xml

@@ -4,4 +4,5 @@
     android:id="@+id/toolbar"
     android:layout_width="match_parent"
     android:layout_height="56dp"
-    android:background="@color/accent"/>
+    android:background="@color/accent"
+    android:elevation="4dp"/>