Add 4 new screenshots to bottom of README grid #164 (#166)

* updated contributors list

* added screenshots #164

* added screenshots #164

* added screenshots #164

* added screenshots #164

Author: snullo

README.md

@@ -45,7 +45,7 @@ conda install -c conda-forge xarray-spatial
 |<a href="/examples/user_guide/1_Surface.ipynb"><img width="1604" src="img/1-0.png"></a> | <a href="/examples/user_guide/1_Surface.ipynb"><img width="1604" src="img/1-1.png"></a>       |<a href="/examples/user_guide/1_Surface.ipynb"><img width="1604" src="img/1-2.png"></a>       |<a href="/examples/user_guide/1_Surface.ipynb"><img width="1604" src="img/1-3.png"></a>       |<a href="/examples/pharmacy-deserts.ipynb"><img width="1604" src="img/1-4.png"></a>|
 |<a href="/examples/user_guide/1_Surface.ipynb"><img width="1604" src="img/2-0.png"></a> | <a href="/examples/user_guide/8_Remote_Sensing.ipynb"><img width="1604" src="img/2-1.png"></a>|<a href="/examples/user_guide/8_Remote_Sensing.ipynb"><img width="1604" src="img/2-2.png"></a>|<a href="/examples/user_guide/5_Classification.ipynb"><img width="1604" src="img/2-3.png"></a>|<a href="/examples/pharmacy-deserts.ipynb"><img width="1604" src="img/2-4.png"></a>|
 |<a href="/examples/"><img width="1604" src="img/3-0.png"></a>                           | <a href="/examples/"><img width="1604" src="img/3-1.png"></a>                                 |<a href="/examples/user_guide/5_Classification.ipynb"><img width="1604" src="img/3-2.png"></a>|<a href="/examples/pharmacy-deserts.ipynb"><img width="1604" src="img/3-3.png"></a>|<a href="/examples/"><img width="1604" src="img/3-4.png"></a>|
-|<a href="/examples/Path-finding_City-of-Austin-Road-Network.ipynb"><img width="1604" src="img/4-0.png"></a> | | | | |
+|<a href="/examples/Path-finding_City-of-Austin-Road-Network.ipynb"><img width="1604" src="img/4-0.png"></a> |<a href="/examples/user_guide/1_Surface.ipynb#Hillshade"><img width="1604" src="img/4-1.png"></a> | <a href="/examples/user_guide/1_Surface.ipynb#Hillshade"><img width="1604" src="img/4-2.png"></a>| <a href="/examples/user_guide/1_Surface.ipynb#Slope"><img width="1604" src="img/4-3.png"></a>| <a href="/examples/pharmacy-deserts.ipynb#Create-a-%22Distance-to-Nearest-Pharmacy%22-Layer-&-Classify-into-5-Groups"><img width="1604" src="img/4-4.png"></a>|
 
 
 `xarray-spatial` grew out of the [Datashader project](https://datashader.org/), which provides fast rasterization of vector data (points, lines, polygons, meshes, and rasters) for use with xarray-spatial.
@@ -203,3 +203,4 @@ With the introduction of projects like Numba, Python gained new ways to provide
 - @marcozimmermannpm
 - @jthetzel
 - @chase-dwelle
+- @SAN154