Adjusts and methods removed to run welcome and newsfeed in refactor code
Slug generator on model "Country" added
Columns "slug" and "country_name"
fix on schema
Slug generator added on "City" model
Slug generator added on "Neighborhood" model
"Slug" columns added to "cities" and "countries"
"Country" and "State" added to seed
Adjust in Newsfeed controller to show events default from user city
Adjust in Newsfeed controller to show events from "city" and "neighborhood" RESTful params
Adjust in routes to show correctly "sign_in" and a little organize