Adds recipe for reading/writing clojure data structures on disk
Adds read/write clojure data to Local IO chapter file
Adds note pointing to read-write-files
Revises local-io/read-write-files recipe to be more explanatory
Adds read-write-files recipe to local-io index, canonicalizes directory
Merge pull request #63 from jcromartie/lightweight-persistence

Read/write clojure data structures