update docs to point to xarray-contrib and xarray-tutorial (#4252)

* update docs to point to xarray-contrib and xarray-tutorial

* add link to youtube tutorial

Author: Joe Hamman

doc/examples.rst

@@ -2,7 +2,7 @@ Examples
 ========
 
 .. toctree::
-    :maxdepth: 2
+    :maxdepth: 1
 
     examples/weather-data
     examples/monthly-means
@@ -15,7 +15,7 @@ Examples
 Using apply_ufunc
 ------------------
 .. toctree::
-    :maxdepth: 2
+    :maxdepth: 1
 
     examples/apply_ufunc_vectorize_1d
 

doc/index.rst

@@ -107,13 +107,16 @@ Documentation
 See also
 --------
 
+- `Xarray's Tutorial`_ presented at the 2020 SciPy Conference (`video recording`_).
 - Stephan Hoyer and Joe Hamman's `Journal of Open Research Software paper`_ describing the xarray project.
 - The `UW eScience Institute's Geohackweek`_ tutorial on xarray for geospatial data scientists.
 - Stephan Hoyer's `SciPy2015 talk`_ introducing xarray to a general audience.
 - Stephan Hoyer's `2015 Unidata Users Workshop talk`_ and `tutorial`_ (`with answers`_) introducing
   xarray to users familiar with netCDF.
 - `Nicolas Fauchereau's tutorial`_ on xarray for netCDF users.
 
+.. _Xarray's Tutorial: https://xarray-contrib.github.io/xarray-tutorial/
+.. _video recording: https://youtu.be/mecN-Ph_-78
 .. _Journal of Open Research Software paper: http://doi.org/10.5334/jors.148
 .. _UW eScience Institute's Geohackweek : https://geohackweek.github.io/nDarrays/
 .. _SciPy2015 talk: https://www.youtube.com/watch?v=X0pAhJgySxk

doc/related-projects.rst

@@ -3,9 +3,11 @@
 Xarray related projects
 -----------------------
 
-Here below is a list of existing open source projects that build
+Below is a list of existing open source projects that build
 functionality upon xarray. See also section :ref:`internals` for more
-details on how to build xarray extensions.
+details on how to build xarray extensions. We also maintain the 
+`xarray-contrib <https://github.com/xarray-contrib>`_ GitHub organization
+as a place to curate projects that build upon xarray.
 
 Geosciences
 ~~~~~~~~~~~