update sphinx config

Author: chrishavlin

docs/conf.py

@@ -97,7 +97,12 @@
 # theme further.  For a list of options available for each theme, see the
 # documentation.
 #
-# html_theme_options = {}
+html_theme_options = {
+    "fixed_sidebar": True,
+    "github_button": True,
+    "github_user": "data-exp-lab",
+    "github_repo": "yt_xarray",
+}
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,

docs/source/yt_xarray.YtAccessor.rst

@@ -1,6 +1,19 @@
 yt\_xarray.YtAccessor
 =====================
 
+To use the ``YtAccessor`` methods, simply ``import yt_xarray`` before
+loading your dataset. Accessor methods will then be available at ``ds.yt``.
+For example::
+
+
+    import xarray as xr
+    import yt_xarray
+
+    ds = xr.open_datset(...)
+    ds.yt.load_grid(...)
+
+The full method definitions are as follows:
+
 .. autoclass:: yt_xarray.YtAccessor
    :members:
    :show-inheritance:

yt_xarray/accessor/accessor.py

@@ -54,7 +54,7 @@ def load_grid(
 
         use_callable : bool
             if True (default), then the yt dataset will utilize links to the open
-            xarray Dataset handle to avoid copying memory.
+            xarray Dataset handle to avoid copying data.
 
         sel_dict: dict
             an optional selection dictionary to apply to the fields before yt dataset