[OpenTAM_DPIS] DPI Statistics Manager & dpis CLI
 - Fixed Thomas Vachuska's comment
   .Removed DpiStatisticsJson.java and related codes for avoiding confusion within package because this does not need anymore.
   .Simplified execute() code and fixed comments in DpiListCommand
   .Added javadocs for public methods and fixed typos
 - Rebased from master 1.8.0-SNAPSHOT, 2016.10.14

 - Upgraded the function and performance.
   .changed List<DpiStatistics> to SortedMap<DpiStatistics>
   .added DpiStatisticsService interfaces to get DpiStatistics by receivedTime
   .added more options of dpis CLI: displays indivisual category by topn
   .and some bug fix

 - Fix javadocs and ONOS style method name.
 - Fix javadocs error.

Change-Id: I07a058e04f63bd9c547a5d605975b214eec0ce1f
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/dpi/package-info.java b/incubator/api/src/main/java/org/onosproject/incubator/net/dpi/package-info.java
new file mode 100644
index 0000000..6ee300c
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/dpi/package-info.java
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Subsystem for dpi statistics service.
+ */
+package org.onosproject.incubator.net.dpi;
\ No newline at end of file