Changing "fns as arguments" recipe name/title and removing "helper" terminology.

Changing the title of "Pass a Function As an Argument to Make Helper Functions
More Reusable" to "Make a Function Reusable by Passing a `fn` as an Argument"
and removing the somewhat nebulous "helper" wording.
new file:   .license-assignments/abusby.md
Added license file for my contributions.

new file:   basics/creating-executable-jar/creating-executable-jar.asciidoc
Provided recipe for creating an executable jar file via Leiningen's uberjar.

new file:   local-io/memory-map-files/memory-map-files.asciidoc
Provided recipe for memory mapping a file via clj-mmap.

renamed:    local-io/parallelizing-file-processing-using-ioto/parallelizing-file-processing-using-ioto.asciidoc -> local-io/parallelizing-file-processing-using-iota/parallelizing-file-processing-using-iota.asciidoc
Changed "ioto" to "iota" to fix typo.
Added simple recipe for printing to stdout and stdout. Brief mentioning of binding and clojure.java.io/writer as well in discussion section.