Improve Sexp#inspect

Author: adambeynon

lib/opal/parser/sexp.rb

@@ -54,7 +54,7 @@ def ==(other)
     alias eql? ==
 
     def inspect
-      "s(#{@array.map { |e| e.inspect }.join ', '})"
+      "(#{@array.map { |e| e.inspect }.join ' '})"
     end
 
     alias to_s inspect