added serverError directive to clear error messages
added serverError directive to clear error messages

filipemerker/instagram-hackhands,memezilla/instagram-hackhands,dongguangming/angularjs-satellizer-nodejs-mongodb,pcnicklaus/instagrammmin,dongguangming/angularjs-satellizer-nodejs-mongodb,kgao/instagram-hackhands,pcnicklaus/instagrammmin,kampta/instaclone,LucasFrecia/instagram-hackhands,memezilla/instagram-hackhands,filipemerker/instagram-hackhands,kampta/instaclone,RAGOpoR/instagram-hackhands,kgao/instagram-hackhands,RAGOpoR/instagram-hackhands,LucasFrecia/instagram-hackhands,sahat/instagram-hackhands