Update README and REPL formatting for list outputs

src/REPL.hs

@@ -6,6 +6,7 @@ import Parser
 import Research
 
 import Control.Monad         		 (void)
+import Data.List                 (intercalate)
 import qualified Data.Map as Map
 import System.Console.Haskeline
 import System.IO            		 (hFlush, stdout)
@@ -38,5 +39,5 @@ decodeResult tc = case ofNumber tc of
   Left _ -> case ofString tc of
     Right str -> "\"" ++ str ++ "\""
     Left _ -> case ofList tc of
-      Right list -> "[" ++ unlines (map decodeResult list) ++ "]"
+      Right list -> "[" ++ intercalate ", " (map decodeResult list) ++ "]"
       Left _ -> ""