Create data.redis package

Fixes #1

src/integration-test/java/org/springframework/session/data/redis/RedisOperationsSessionRepositoryITests.java

@@ -1,4 +1,4 @@
-package org.springframework.session.redis;
+package org.springframework.session.data.redis;
 
 import static org.fest.assertions.Assertions.*;
 

src/main/java/org/springframework/session/data/redis/RedisOperationsSessionRepository.java

@@ -13,7 +13,7 @@
  * License for the specific language governing permissions and limitations under
  * the License.
  */
-package org.springframework.session.redis;
+package org.springframework.session.data.redis;
 
 import org.springframework.data.redis.core.BoundHashOperations;
 import org.springframework.data.redis.core.RedisOperations;

src/test/java/org/springframework/session/data/redis/RedisOperationsSessionRepositoryTests.java

@@ -1,4 +1,4 @@
-package org.springframework.session.redis;
+package org.springframework.session.data.redis;
 
 import static org.fest.assertions.Assertions.*;
 
@@ -11,8 +11,6 @@ import org.springframework.data.redis.core.RedisOperations;
 import org.springframework.session.MapSession;
 import org.springframework.session.Session;
 
-import static org.junit.Assert.*;
-
 @RunWith(MockitoJUnitRunner.class)
 public class RedisOperationsSessionRepositoryTests {
 	@Mock