This filter converts a book in a chest to a give command that gives all players the book that you put in the chest.
1) Put book in chest.
2) Run Filter on chest
3) All books will be converted into a command block with a command inside of them that will give all players the book when activated.
UPDATED 5/20/14 – Added support for Summon Command, Writable books, and conversion of written to writable.