Add documentation and source

Added documentation, source and extra files.

source/templating/demonstration/urls.py

@@ -0,0 +1,14 @@
+from django.urls import path
+
+from demonstration.views import *
+
+
+urlpatterns = [
+    path("untemplated/", view_untemplated, name="untemplated"),
+    path("basic/plain/", view_basic_plain, name="basic-plain"),
+    path("basic/variables/", view_basic_variables, name="basic-variables"),
+    path("basic/control/", view_basic_control, name="basic-control"),
+    path("basic/control/class/", BasicTemplateView.as_view(), name="basic-control-class"),
+    path("basic/filters/", view_basic_filters, name="basic-filters"),
+    path("inheritance/base/", view_inheritance_base, name="inheritance-base"),
+]