Update README.md

Author: apottere

README.md

@@ -16,15 +16,15 @@ repositories {
 }
 
 dependencies {
-    compile 'com.graphql-java:graphql-java-servlet:4.6.1'
+    compile 'com.graphql-java:graphql-java-servlet:5.0.0'
 }
 ```
 
 ```xml
 <dependency>
     <groupId>com.graphql-java</groupId>
     <artifactId>graphql-java-servlet</artifactId>
-    <version>4.6.1</version>
+    <version>5.0.0</version>
 </dependency>
 ```