Change the code style on the readme;

the spaces there are not really important, but just to keep it all the same

Author: chris-l

README.md

@@ -44,7 +44,7 @@ var ast = {
 };
 
 // Will output -> echo "hello world";
-console.log( unparse(ast, options) );
+console.log(unparse(ast, options));
 ```
 
 ## Options