Adding the new Eiffel example.

demo/kitchen-sink/docs/eiffel.e

@@ -0,0 +1,30 @@
+note
+	description: "Represents a person."
+
+class
+	PERSON
+
+create
+	make, make_unknown
+
+feature {NONE} -- Creation
+
+	make (a_name: like name)
+			-- Create a person with `a_name' as `name'.
+		do
+			name := a_name
+		ensure
+			name = a_name
+		end
+
+	make_unknown
+		do ensure
+			name = Void
+		end
+
+feature -- Access
+
+	name: detachable STRING
+			-- Full name or Void if unknown.
+
+end