Remove no longer desired features from example

demo/example.dee

@@ -1,24 +1,11 @@
-## By the end of the book I want to have an interpreter
-## for this little language, maybe a compiler too
-
 print(1 + 1) ## 2
 print("Hello world!") ## Hello world
 
-name <- read()
-print("Hi there $name") ## Hi there <name>
-
 have <- 10
 want <- 11
 need <- have - want ## This is subtraction
 have-want <- 1 ## This is a variable named "have-want"
 
-print(HaVe-WAnt) ## 1 (case doesn't matter)
-%%option meaningful-casing
-Apples <- 1
-print(apples) ## <undef> (or maybe it does)
-
-print("one fish"); print("two fish") ## Two statements on the same line
-
 say-hi <- -> print("Hi from inside a function")
 say-hi() ## Hi from inside a function
 
@@ -31,8 +18,8 @@ duck <- {
 	eats? <- food -> food = "bread"
 } ## Objects created on the fly
 
-print duck.eats?("bread") ## true
+print(duck.eats?("bread")) ## true
-print duck.eats?("corn") ## false
+print(duck.eats?("corn")) ## false
 
 cow <- {
 	talk <- print("Moo")
@@ -43,11 +30,11 @@ human <- {
 	eats? <- _ -> true
 }
 
-print cow.eats?("grass") ## true
+print(cow.eats?("grass")) ## true
-print cow.eats?("corn") ## true
+print(cow.eats?("corn")) ## true
 
 talk-or-pass-wind <- character ->
-	if character has talk then
+	if character has talk
 		character.talk()
 	else
 		print("*Fart*")