add test for get params from ios app
update README
change background image
add library link
add send epub file
add link to download epub
add some epub example modify generate epub way from book.new to builder
add create book and generate epub same time
add new js
fix index epub path
change public test epub
fix create book process
change download ebook link
fix ruby syntax order in book_show
add ebook_path name
add respond json for create
add @book in index
add @book.id in link download
add skip verify if json
rm csrf