Add codox for generating docs.

.gitignore

@@ -1,3 +1,4 @@
 xps2pdf.tar.gz
 target
-pom.xml
+pom.xml
+docs

project.clj

@@ -14,6 +14,9 @@
 
   :middleware [leiningen.git-inject/middleware]
 
+  :codox {:output-path "docs"
+          :source-uri "https://github.com/clinico-omics-plugins/xps2pdf/blob/v{version}/{filepath}#L{line}"}
+
   :profiles
   {:provided
    {:dependencies