public String password { get; set; }
public String username { get; set; }
public List<Freelancer__c > FreelancerList{get;set;}
public Freelancer__c fre{get; set;}
public PageReference registerUser()
{
  {
            fre= [select User_Name__c,Password__c from Freelancer__c limit 1 ];
            System.debug('++++'+fre);
            if(UserName==fre.User_Name__c && Password==fre.Password__c)
            {

                PageReference newPage = new PageReference('http://myatsui-developer-edition.ap2.force.com/referralHome');
                newPage.setRedirect(true);
                return newPage;
             }
             else{
                ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.INFO, 'TRY AGAIN... .'));

            }

            return null ;
}