adding an if/else/chain test

test/fixtures/execution/test_fancy_if_statement.coffee

@@ -13,4 +13,14 @@ puts result
 first: if false then false else second: if false then false else true
 
 puts first
-puts second
+puts second
+
+
+result: if false
+  false
+else if NaN
+  false
+else
+  true
+
+puts result