add authors and copyright info to man page

complete/src/lib.rs

@@ -28,6 +28,8 @@ pub struct Command<'a> {
     pub version: &'a str,
     pub after_options: &'a str,
     pub args: Vec<Arg<'a>>,
+    pub license: &'a str,
+    pub authors: &'a str,
 }
 
 /// Description of an argument

complete/src/man.rs

@@ -57,5 +57,12 @@ pub fn render(c: &Command) -> String {
         page.text(flags);
         page.text([roman(arg.help)]);
     }
+
+    page.control("SH", ["AUTHORS"]);
+    page.text([roman(c.authors)]);
+
+    page.control("SH", ["COPYRIGHT"]);
+    page.text([roman(format!("Copyright © {}.", &c.authors))]);
+    page.text([roman(format!("License: {}", &c.license))]);
     page.render()
 }