message: Update __init__.py
  Revert some changes
diff: @@ -28,22 +28,22 @@ tf.merge_all_summaries -> tf.summary.merge_all
  ```
  We think this API is cleaner and will improve long-term discoverability and
  -clarity of the TensorFlow API. We however, also took the opportunity to make an
  +clarity of the TensorFlow API. But we also took the opportunity to make an
  important change to how summary "tags" work. The "tag" of a summary is the
  string that is associated with the output data, i.e. the key for organizing the
  generated protobufs.
  Previously, the tag was allowed to be any unique string; it had no relation
  to the summary op generating it, and no relation to the TensorFlow name system.
  -This behavior greatly complicates the reusability of the code that would add
  +This behavior made it very difficult to write reusable that would add
  summary ops to the graph. If you had a function to add summary ops, you would
  -need to pass in a namescope, manually, to that function to create deduplicated
  +need to pass in a `tf.name_scope`, manually, to that function to create deduplicated
  tags. Otherwise your program would fail with a runtime error due to tag
  collision.
  The new summary APIs under tf.summary throw away the "tag" as an independent
  concept; instead, the first argument is the node name. So summary tags now
  -automatically inherit the surrounding TF namescope, and automatically
  +automatically inherit the surrounding `tf.name_scope`, and automatically
  are deduplicated if there is a conflict. Now however, the only allowed
  characters are alphanumerics, underscores, and forward slashes. To make
  migration easier, the new APIs automatically convert illegal characters to
  