Add query description

Author: yrashk

README.md

@@ -15,7 +15,7 @@ repositories {
 }
 
 dependencies {
-  compile 'graphql-java-servlet:graphql-java-servlet:0.6.1'
+  compile 'graphql-java-servlet:graphql-java-servlet:0.6.2'
 }
 ```
 

src/main/java/graphql/servlet/GraphQLServlet.java

@@ -76,6 +76,7 @@ protected void updateSchema() {
                     type(query).
                     staticValue(provider.context()).
                     name(provider.getName()).
+                    description(query.getDescription()).
                     build());
         }