add controller categories
Merge branch 'dev' of https://github.com/volodya8bit/sigma_project into dev
test
add collum role to user
new CategoriesController
create CRUD to categories
new CategoriesController with CRUD
rspec update
new CategoriesController index
rspec update
project with CRUD func
rename categories_controller_spec
cancan pagination added
add pagination
changes in rspec
refactors in views and controllers
change in routes
change in routes.rb with resources
add helper and change routers.rb
change layout from erb to slim