add RSpec testing
remove useless folder
add model schema information
update
add first line encoding utf-8
create testing files
remove useless column in user model
add minitest to Gemfile
update
create test mothod
reorder and add new/destroy test
add renthouse create test
add edit update testing
remove event controller and change map show to index
move maps to rent_houses and remvoe map controller
add rent_house/index
update router and url path
update
add actions and comment, move code to model
update test about img params