Preparation for 2.0-rc4 release

Author: kevzlou7979

.gitignore

@@ -0,0 +1 @@
+gwt-material-starter.iml

README.md

@@ -8,7 +8,7 @@ Template projects of gwt-material
 <dependency>
     <groupId>com.github.gwtmaterialdesign</groupId>
     <artifactId>gwt-material-starter</artifactId>
-    <version>2.0-rc2</version>
+    <version>2.0-rc4</version>
 </dependency>
 
 ```

pom.xml

@@ -4,14 +4,14 @@
     <parent>
         <artifactId>gwt-material-parent</artifactId>
         <groupId>com.github.gwtmaterialdesign</groupId>
-        <version>2.0-rc2</version>
+        <version>2.0-rc4</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>com.github.gwtmaterialdesign</groupId>
     <artifactId>gwt-material-starter</artifactId>
-    <version>2.0-rc2</version>
+    <version>2.0-rc4</version>
 
     <packaging>war</packaging>
     <name>GWT Material Starter</name>
@@ -22,7 +22,7 @@
         <gwtp.version>1.5.3</gwtp.version>
         <gin.version>2.1.2</gin.version>
         <gwt.style>OBF</gwt.style>
-        <gwt-material.version>2.0-rc2</gwt-material.version>
+        <gwt-material.version>2.0-rc4</gwt-material.version>
 
         <!-- maven -->
         <maven-war-plugin.version>2.6</maven-war-plugin.version>