angular.module('khatebartar.config', [])
    .constant('BaseUrl', 'http://api.khatebartar.com/')
    .constant('ApiKey', 'WIG3BmFbjWBmwDZPE5E7b2bP6L6mGTsXArdiOegc4eU=')
;

angular.module('khatebartar.config', [])
    .constant('BaseUrl', '')
    .constant('ApiKey', '')
;

Update config.js