a notice on website/README indicating project's maintenance mode

README.md

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 [![Build Status](https://travis-ci.org/HazyResearch/deepdive.svg?branch=master)](https://travis-ci.org/HazyResearch/deepdive)
 [![Join the chat at https://gitter.im/HazyResearch/deepdive](https://badges.gitter.im/HazyResearch/deepdive.svg)](https://gitter.im/HazyResearch/deepdive?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
+----
+
+<blockquote class="well alert-block alert-danger">
+<big>
+As of 2017, DeepDive project is in maintenance mode and no longer under active development.
+The user community remains active, but the original project members can no longer promise exciting new features/improvements or responding to requests.
+For the more up-to-date research, please see the <a href="https://hazyresearch.github.io/snorkel/">Snorkel Project</a> or <a href="https://ds3lab.org/~czhang/">Ce Zhang's Projects</a>.
+</big>
+</blockquote>
+
+----
+
 <strong><big>See [deepdive.stanford.edu](http://deepdive.stanford.edu) or [doc/](doc/index.md) to learn how to install and use DeepDive.</big></strong>
 
 <strong>Or, just start with this one-liner command:</strong>

doc/index.md

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 toc_offset_top: 350
 ---
 
+----
+
+<blockquote class="well alert-block alert-danger">
+<big>
+As of 2017, DeepDive project is in maintenance mode and no longer under active development.
+The user community remains active, but the original project members can no longer promise exciting new features/improvements or responding to requests.
+For the more up-to-date research, please see the <a href="https://hazyresearch.github.io/snorkel/">Snorkel Project</a> or <a href="https://ds3lab.org/~czhang/">Ce Zhang's Projects</a>.
+</big>
+</blockquote>
+
+----
+
+
 ### What does DeepDive do?
 
 DeepDive is a system to extract value from [dark data](http://www.gartner.com/it-glossary/dark-data).