Update readme and installation instructions

README.rst

@@ -123,7 +123,7 @@ You can contact Andrew Hearin directly by email at ahearin-at-anl-dot-gov, or by
 
 Citing Halotools
 ----------------
-If you use Halotools modules to support your science publication, please cite `Hearin et al. (2017)<https://arxiv.org/abs/1606.04106>`_, ideally taking note of the version of the code you used, e.g., v0.8::
+If you use Halotools modules to support your science publication, please cite `Hearin et al. (2017) <https://arxiv.org/abs/1606.04106>`_, ideally taking note of the version of the code you used, e.g., v0.8::
 
     @ARTICLE{halotools,
            author = {{Hearin}, Andrew P. and {Campbell}, Duncan and {Tollerud}, Erik and {Behroozi}, Peter and {Diemer}, Benedikt and {Goldbaum}, Nathan J. and {Jennings}, Elise and {Leauthaud}, Alexie and {Mao}, Yao-Yuan and {More}, Surhud and {Parejko}, John and {Sinha}, Manodeep and {Sip{\"o}cz}, Brigitta and {Zentner}, Andrew},

docs/install.rst

@@ -109,28 +109,26 @@ Dependencies
 
 If you install halotools using conda or pip, then most of your dependencies will be handled for you automatically. The only additional dependency you may need is:
 
-- `h5py <http://h5py.org/>`_: 2.5 or later
+- `h5py <http://h5py.org/>`_: 3.7 or later
 
 The h5py package is used for fast I/O of large simulated datasets.
 
 If you did not use conda or pip, then you should be aware of the following strict requirements:
 
-- `Python <http://www.python.org/>`_: 3.7.x
+- `Python <http://www.python.org/>`_: 3.9.x
 
 - `Numpy <http://www.numpy.org/>`_: 1.9 or later
 
 - `Scipy <http://www.scipy.org/>`_: 0.15 or later
 
-- `Cython <http://www.cython.org/>`_: 0.23 or later
+- `Cython <http://www.cython.org/>`_: 0.29.32 or later
 
-- `Astropy`_: 4.0 or later
+- `Astropy`_: 5.0 or later
 
 - `BeautifulSoup <http://www.crummy.com/software/BeautifulSoup/>`_: For crawling the web for halo catalogs.
 
 - `Requests <http://docs.python-requests.org/en/latest/>`_: Also for crawling the web for halo catalogs.
 
-- `h5py <http://h5py.org/>`_: 2.5 or later
-
 Any of the above can be installed with either pip or conda.
 
 .. _verifying_your_installation: