Make hello-clojure `(use)`-able.

clj/hello-clojure.clj

          (repeatedly #(read file false nil)))))))
(def hello-forms
  (let [forms (read-file "/home/lu/k/lp/clj/hello-clojure.clj")]
  (let [forms (read-file "/home/lu/k/lp/clj/hello_clojure.clj")]
  { :number-of-forms (count forms)
    :forms forms }))
hello-forms