Add all images to the repository instead of referencing external URLs

Author: Tenzer

docs/examples.rst

@@ -3,13 +3,13 @@ Examples
 
 * `Tic-Tac-Toe <https://github.com/bpython/curtsies/blob/main/examples/tictactoeexample.py>`_
 
-.. image:: http://i.imgur.com/AucB55B.png
+.. image:: images/tic-tac-toe.png
 
 * `Avoid the X's game <https://github.com/bpython/curtsies/blob/main/examples/gameexample.py>`_
 
-.. image:: http://i.imgur.com/nv1RQd3.png
+.. image:: images/avoid-the-x.png
 
 * `Bpython-curtsies uses curtsies <https://ballingt.com/bpython-curtsies/>`_
 
-.. image:: http://i.imgur.com/r7rZiBS.png
+.. image:: images/bpython-video.png
    :target: https://www.youtube.com/watch?v=lwbpC4IJlyA

docs/images/avoid-the-x.png

@@ -1,7 +1,7 @@
 Curtsies documentation
 ^^^^^^^^^^^^^^^^^^^^^^
-.. |shoes| image:: http://ballingt.com/assets/curtsies-tritone-small.png
-.. |curtsiestitle| image:: http://ballingt.com/assets/curtsiestitle.png
+.. |shoes| image:: images/shoes.png
+.. |curtsiestitle| image:: images/logo.png
 
 |curtsiestitle|