Clean up readme for new website (quantumlib#695)

* Clean up readme for new website

Links to new website docs are now fixed.

The rtd_docs folder is added back with code for updating
Readthedocs with a page redirect to the new OpenFermion
landing page at https://quantumai.google/openfermion

* Remove old docs build dev_tools

We don't need this dev_tools anymore.

I am leaving the folder so we can populate it later
with tensorflow-docs autogeneration code.

README.rst

@@ -15,7 +15,7 @@ Hamiltonians. For more information, see our
 .. image:: https://readthedocs.org/projects/openfermion/badge/?version=latest
     :target: http://openfermion.readthedocs.io/en/latest/?badge=latest
     :alt: Documentation Status
-    
+
 .. image:: https://badge.fury.io/py/openfermion.svg
     :target: https://badge.fury.io/py/openfermion
 
@@ -25,40 +25,22 @@ Run the interactive Jupyter Notebooks in Colab_ or MyBinder_:
 .. _Colab: https://colab.research.google.com/github/quantumlib/OpenFermion
 .. _MyBinder:  https://mybinder.org/v2/gh/quantumlib/OpenFermion/master?filepath=examples
 
-Plugins
-=======
-
-OpenFermion relies on modular plugin libraries for significant functionality.
-Specifically, plugins are used to simulate and compile quantum circuits and to perform
-classical electronic structure calculations.
-Follow the links below to learn more!
-
-Circuit compilation and simulation plugins
-------------------------------------------
-* `Forest-OpenFermion <https://github.com/rigetticomputing/forestopenfermion>`__ to support integration with `Forest <https://www.rigetti.com/forest>`__.
 
-* `SFOpenBoson <https://github.com/XanaduAI/SFOpenBoson>`__ to support integration with `Strawberry Fields <https://github.com/XanaduAI/strawberryfields>`__.
+Installation and Documentation
+==============================
 
-Electronic structure package plugins
-------------------------------------
-* `OpenFermion-Psi4 <http://github.com/quantumlib/OpenFermion-Psi4>`__ to support integration with `Psi4 <http://psicode.org>`__.
+Installing the latest **stable** OpenFermion requires pip. Make sure that you are using an up-to-date version of it.
 
-* `OpenFermion-PySCF <http://github.com/quantumlib/OpenFermion-PySCF>`__ to support integration with `PySCF <https://github.com/sunqm/pyscf>`__.
+Documentation can be found at `quantumai.google/openfermion <https://quantumai.google/openfermion>`__ and the following links
 
-* `OpenFermion-Dirac <https://github.com/bsenjean/Openfermion-Dirac>`__ to support integration with `DIRAC <http://diracprogram.org/doku.php>`__.
+* `Installation <https://quantumai.google/openfermion/install>`__
 
-Getting started
-===============
+* `API Docs <https://quantumai.google/reference/python/openfermion/all_symbols>`__
 
-Installing OpenFermion requires pip. Make sure that you are using an up-to-date version of it.
-For information about getting started beyond what is provided below please see our
-`tutorial <https://github.com/quantumlib/OpenFermion/blob/master/docs/tutorials/intro_to_openfermion.ipynb>`__
-in the
-`tutorials <https://github.com/quantumlib/OpenFermion/blob/master/docs/tutorials>`__ folder
-as well as our detailed `code documentation <http://openfermion.readthedocs.io/en/latest/openfermion.html>`__.
+* `Tutorials <https://quantumai.google/openfermion/tutorials/intro_to_openfermion>`__
 
-Currently, OpenFermion is only tested on Mac and Linux for the reason that both
-electronic structure plugins are only compatible with Mac and Linux. However,
+Currently, OpenFermion is tested on Mac, Windows, and Linux. We recommend using Mac or Linux because
+the electronic structure plugins are only compatible on these platforms. However,
 for those who would like to use Windows, or for anyone having other difficulties
 with installing OpenFermion or its plugins, we have provided a Docker image
 and usage instructions in the
@@ -70,9 +52,10 @@ You might also want to explore the alpha release of the
 `OpenFermion Cloud Library <https://github.com/quantumlib/OpenFermion/tree/master/cloud_library>`__
 where users can share and download precomputed molecular benchmark files.
 
-Check out other `projects and papers using OpenFermion <docs/projects.md>`__ for inspiration,
+Check out other `projects and papers using OpenFermion <https://quantumai.google/openfermion/projects>`__ for inspiration,
 and let us know if you've been using OpenFermion!
 
+
 Developer install
 -----------------
 
@@ -93,6 +76,28 @@ To install the latest PyPI release as a library (in user mode):
 
   python -m pip install --user openfermion
 
+Plugins
+=======
+
+OpenFermion relies on modular plugin libraries for significant functionality.
+Specifically, plugins are used to simulate and compile quantum circuits and to perform
+classical electronic structure calculations.
+Follow the links below to learn more!
+
+Circuit compilation and simulation plugins
+------------------------------------------
+* `Forest-OpenFermion <https://github.com/rigetticomputing/forestopenfermion>`__ to support integration with `Forest <https://www.rigetti.com/forest>`__.
+
+* `SFOpenBoson <https://github.com/XanaduAI/SFOpenBoson>`__ to support integration with `Strawberry Fields <https://github.com/XanaduAI/strawberryfields>`__.
+
+Electronic structure package plugins
+------------------------------------
+* `OpenFermion-Psi4 <http://github.com/quantumlib/OpenFermion-Psi4>`__ to support integration with `Psi4 <http://psicode.org>`__.
+
+* `OpenFermion-PySCF <http://github.com/quantumlib/OpenFermion-PySCF>`__ to support integration with `PySCF <https://github.com/sunqm/pyscf>`__.
+
+* `OpenFermion-Dirac <https://github.com/bsenjean/Openfermion-Dirac>`__ to support integration with `DIRAC <http://diracprogram.org/doku.php>`__.
+
 How to contribute
 =================
 
@@ -126,6 +131,7 @@ Authors
 
 `Ryan Babbush <http://ryanbabbush.com>`__ (Google),
 `Jarrod McClean <http://jarrodmcclean.com>`__ (Google),
+`Nicholas Rubin <https://github.com/ncrubin>`__ (Google),
 `Kevin Sung <https://github.com/kevinsung>`__ (University of Michigan),
 `Ian Kivlichan <http://aspuru.chem.harvard.edu/ian-kivlichan/>`__ (Harvard),
 `Dave Bacon <https://github.com/dabacon>`__ (Google),
@@ -152,7 +158,6 @@ Authors
 `Isil Ozfidan <https://github.com/conta877>`__ (D-Wave Systems),
 `Max Radin <https://github.com/max-radin>`__ (UC Santa Barbara),
 `Jhonathan Romero <https://github.com/jromerofontalvo>`__ (Harvard),
-`Nicholas Rubin <https://github.com/ncrubin>`__ (Google),
 `Daniel Sank <https://github.com/DanielSank>`__ (Google),
 `Nicolas Sawaya <https://github.com/nicolassawaya>`__ (Harvard),
 `Bruno Senjean <https://github.com/bsenjean>`__ (Leiden University),