Add a few naming guidelines for the converter library.

PiperOrigin-RevId: 204199604

tensorflow/contrib/autograph/converters/__init__.py

@@ -18,5 +18,15 @@ from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
 
-# TODO(mdan): Define a base transformer class that can recognize skip_processing
-# TODO(mdan): All converters are incomplete, especially those that change blocks
+# Naming conventions:
+#  * each converter should specialize on a single idiom; be consistent with
+#    the Python reference for naming
+#  * all converters inherit core.converter.Base
+#  * module names describe the idiom that the converter covers, plural
+#  * the converter class is named consistent with the module, singular and
+#    includes the word Transformer
+#
+# Example:
+#
+#   lists.py
+#     class ListTransformer(converter.Base)