update README
removed unnecessary comments in Gemfile and done bundle install
remove unnecesary comments in .gitignore
ignored /vendor/bundle directory
users table is created to databse
removed unnecessary comments in routes.rb and defined root routing
show empty page when accessed root url
not read turbolink files
added slim-rails to write a slim html!
changed welcome view from pure html to slim
changed also application layout from erb to slim and translate
defined users resources to create a new user
added empty users controller
added an empty user model which handle users table
added a form to create a new user
save a new user to database if form is filled and submited
added pry-rails in Gemfile
implemented around login process and defined current_user, logged_in? as a helper method to use it in a view
improved efficiency of current_user method
defined routes to view a signin page and do signin