Updated pom.xml and README for 1.5.3 release

Author: kevzlou7979

README.md

@@ -2,13 +2,13 @@
 #gwt-material-demo [![Build Status](https://travis-ci.org/GwtMaterialDesign/gwt-material-demo.svg?branch=master)](https://travis-ci.org/GwtMaterialDesign/gwt-material-demo)
 Demo application to show the features of the [gwt-material](https://github.com/GwtMaterialDesign/gwt-material) library.
 
-### Release 1.5.1 Demo
+### Release 1.5.3 Demo
 [http://gwtmaterialdesign.github.io/gwt-material-demo](http://gwtmaterialdesign.github.io/gwt-material-demo)
 ```xml
 <dependency>
     <groupId>com.github.gwtmaterialdesign</groupId>
     <artifactId>gwt-material-demo</artifactId>
-    <version>1.5.1</version>
+    <version>1.5.3</version>
 </dependency>
 ```
 

pom.xml

@@ -188,17 +188,17 @@
         <dependency>
             <groupId>com.github.gwtmaterialdesign</groupId>
             <artifactId>gwt-material</artifactId>
-            <version>${gwt-material.version}</version>
+            <version>1.5.3</version>
         </dependency>
         <dependency>
             <groupId>com.github.gwtmaterialdesign</groupId>
             <artifactId>gwt-material-themes</artifactId>
-            <version>${gwt-material.version}</version>
+            <version>1.5.2</version>
         </dependency>
         <dependency>
             <groupId>com.github.gwtmaterialdesign</groupId>
             <artifactId>gwt-material-addins</artifactId>
-            <version>${gwt-material.version}</version>
+            <version>1.5.2</version>
         </dependency>
 
         <!-- App Engine -->