Add window layout example and it's screenshot

examples/example.window.sh

@@ -0,0 +1,15 @@
+# Set custom window name. Default is based on filename.
+window_name "Example Window"
+
+# Set a window root path. Default is `$session_root`.
+window_root "~/Desktop"
+
+# Create new window. Remove if you want to apply layout to current window.
+tmux new-window -t "$session" -n "$window"
+
+# Split window into panes.
+tmux split-window -t "$session:$window.0" -v -p 20 "watch -t date"
+tmux split-window -t "$session:$window.1" -h -p 60
+
+# Set active pane.
+tmux select-pane -t "$session:$window.0"