add VHS-generated GIFs for all examples

Created tape files and GIFs demonstrating each example:
- counter, timer, list, spinner, views, http
- Updated README with GIF showcase

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

assets/views.tape

@@ -0,0 +1,48 @@
+# Views Example
+Output assets/views.gif
+
+Set Shell "bash"
+Set FontSize 16
+Set Width 700
+Set Height 450
+Set Theme "Catppuccin Mocha"
+
+Type "bb views"
+Enter
+Sleep 1s
+
+# Navigate menu
+Type "j"
+Sleep 400ms
+Type "j"
+Sleep 400ms
+
+# Enter detail view
+Enter
+Sleep 1s
+
+# Go back
+Type "b"
+Sleep 600ms
+
+# Navigate to another item
+Type "j"
+Sleep 400ms
+Enter
+Sleep 1s
+
+# Try to quit - shows confirm dialog
+Type "q"
+Sleep 800ms
+
+# Say no
+Type "n"
+Sleep 600ms
+
+# Go back to menu
+Escape
+Sleep 600ms
+
+# Actually quit
+Type "q"
+Sleep 500ms