DATAKV-75

+ several improvements to the Gradle build

docs/build.gradle

@@ -28,6 +28,10 @@ refSpec = copySpec {
     into ('reference/images') {
         from (imagesDir)
     }
+    //expand(project.properties)
+    filter { String line ->
+        "[$line]"
+    }
 }
 
 task reference (type: Copy) {

docs/src/api/javadoc.options

@@ -9,4 +9,5 @@
 -group "Spring Data Riak Support" "org.springframework.data.keyvalue.riak*"
 -link http://static.springframework.org/spring/docs/3.0.x/javadoc-api
 -link http://download.oracle.com/javase/6/docs/api/
+-exclude org.springframework.data.keyvalue.redis.config