Missing semicolon

Signed-off-by: Fabio José <fabiojose@gmail.com>

lib/formats/json_0_1.js

@@ -5,10 +5,10 @@ function JSONFormatter(){
 
 JSONFormatter.prototype.format = function(payload){
   return payload;
-}
+};
 
 JSONFormatter.prototype.toString = function(payload){
   return JSON.stringify(payload);
-}
+};
 
 module.exports = JSONFormatter;