Add build_docs.py so that docs could be generated. (#481)
Add build_docs.py so that docs could be generated. (#481)

Signed-off-by: Yong Tang <765086fe2e0c1f980161f127fec596800f327f62@outlook.com>
tensorflow/io,tensorflow/io,tensorflow/io,tensorflow/io,tensorflow/io,tensorflow/io,tensorflow/io