refactor super hero genre to superhero
refactor create action
add genre name to url
refactor existing tests
delete factories folder
give image link a unique id
refactor test for clicking the comic page
give navigation arrows unique ids
create test for previous arrow link
create test for next-arrow link
create unique ids for thumbnails and genre buttons
create unique class for each thumbnail
create test for thumbnails button
remove whitespace
install pry gem
create unique class for thumbnails in genres#show
create test for genre button in pages#show
remove whitespace