Add missing copyrights

Author: karllessard

tensorflow-examples/src/main/java/org/tensorflow/model/examples/mnist/SimpleMnist.java

@@ -1,3 +1,19 @@
+/*
+ *  Copyright 2020 The TensorFlow Authors. All Rights Reserved.
+ *
+ *  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.
+ *  =======================================================================
+ */
 package org.tensorflow.model.examples.mnist;
 
 import org.tensorflow.Graph;

tensorflow-examples/src/main/java/org/tensorflow/model/examples/mnist/data/ImageBatch.java

@@ -1,3 +1,19 @@
+/*
+ *  Copyright 2020 The TensorFlow Authors. All Rights Reserved.
+ *
+ *  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.
+ *  =======================================================================
+ */
 package org.tensorflow.model.examples.mnist.data;
 
 import org.tensorflow.tools.ndarray.ByteNdArray;

tensorflow-examples/src/main/java/org/tensorflow/model/examples/mnist/data/ImageBatchIterator.java

@@ -14,7 +14,6 @@
  *  limitations under the License.
  *  =======================================================================
  */
-
 package org.tensorflow.model.examples.mnist.data;
 
 import static org.tensorflow.tools.ndarray.index.Indices.range;

tensorflow-examples/src/main/java/org/tensorflow/model/examples/mnist/data/MnistDataset.java

@@ -14,7 +14,6 @@
  *  limitations under the License.
  *  =======================================================================
  */
-
 package org.tensorflow.model.examples.mnist.data;
 
 import static org.tensorflow.tools.ndarray.index.Indices.from;